I've been playing with the T-Bucket and making some adjustments to the MS when I get the chance to.

It's running well. I've added a lot of timing and the engine loves it. I can get away with this because the car is so light it doesn't really put much of a load on the engine. Still needs more though. It fires up every time the same way, little bit of an extended crank when cold, but then quick to fire on warm/hot restarts, runs as high as about 190 degrees F, when in stop and go or sitting and idling, cruising is generally down closer to 170ish.

I've also been using my phone with MSDroid to make small adjustments and datalogs. It's been dropping out at certain points, usually just above 3000 RPM, but not every time. I have a couple ideas on things to try to get that to stop.

So far the MS has been good. Unfortunately I can't really directly compare Delco to the MS in this application like I wanted to do when I started this thread since I never had the Delco running on this engine, well, I did, but for about 35 seconds just to get it to fire, since I knew the calibration would be close, and I didn't have one of my WBO2 sensors to install to use with the MS to get it tuned.

But I can pretty much say that the outcome and use were pretty much what I expected going into this.

Both systems have their pros and cons, I still like both systems for different reasons.

The Delco I like the fact that it has a true RDF/LHM mode (Limp Home), that DOESN'T rely on the CPU being fully functional, or even a proper bin on the EPROM being present. The MS1 and MS2 don't have any sort of LHM, and the MS3 has a quasi LHM, that will allow substitute values if a sensor or multiple sensors fail, which is better than nothing at all, but still relies on the CPU to fully functional.

The Delco is cheap to acquire, install and even tune, although like anything, you can throw good amounts of money at a Delco for tuning as well, such as using Emulators and other related bits.I also like the fact that you can buy a replacement Delco ECM pretty much anywhere, IF you ever have one fail. In my time of using Delcos I've only ever had 2 fail where it wasn't my own stupidity causing the failure, and even one of those failures, could be sorta blamed on me, when I had some rain water drip onto the ECM, where as if I had the ECM mounted where it should have been, it likely wouldn't have been an issue. The MS can be done inexpensively as well, especially if you buy used, but buying MS used is a bit of a gamble, due to the universality of the MS, it may need extensive recofiguing of the hardware to use on your application, and as long as you're proficient with reading schematics and soldering, that's a great way to go. The other issue is that someone who isn't that proficient may have caused damage to the MS ECU and now you need to deal with it or even find the problem.
I've bought several MS1 and MS2 ECU and even a DIYpnp over the last year, the most I've spent on a unit has been about $170 USD, with shipping. The deals are out there. I've bought a couple locally, because again they were good deals. However this seems to be atypical, especially when it comes to the specific versions I have been buying. I just find them at the right time and jump on them. This again is where if you're proficient with reading schematics and soldering you can buy ECUs that are reported to be not working, damaged, etc and repair them. I bought one MS2 V3.0 because the guy bought a DIY kit, and wasn't very good with the soldering aspect, so he damaged the main board. He was upfront about this, but it came with a never been used MS2 daughter card. He never got to the part in the assembly where it gets plugged in before giving up and buying a pre-built unit. I figured at the very least I was spending just a little more than just buying the MS2 daughter card and it was worth it that way to upgrade one of my MS1 ECUs, even if the mainboard was a total loss. The board was pretty badly damaged in to spots, over current transistor for the fuel pump output and the MAP sensor pins. This worked out though since I want to install an electronic trans in one of my vehicles so I am re-configuring it for trans control use. I had planned to run that vehicle with '7749 and $59, but now I will likely also run it with MS, so that I can use the CANBUS between the UCU and the TCU to save on connections and be able to take advantage of some of the trans control features, I'll see when I get to that point.
I bought a broken DIYpnp for about the price of shipping because that's all teh guy wanted. I haven't been able to verify everything that is wrong with it yet, but since I like to play with electronics I figured this was worth the price, especially since I've wasted more money on less fruitful en devours in the past. lol Since I can communicate with the CPU, I think I'm hoping that the I/O will all be good and hopefully just an external driver is bad. I need to set up a testing adapter to plug into my JimStim to feed it actual sensor signals though.

Tuning:
Tuning one is no easier than tuning the other IMO. Once the engine is up and running tuning is about the same between each, mostly working with the VE and spark tables, and making other minor adjustments to start up enrichments, AE, DE, etc are all very similar, and in some case just the same. The biggest difference to remember when tuning a Delco is that the VE numbers stop at 100 (99.8 actual IIRC), and any number above that gets truncated to the 100 value, where as the MS allows higher than 100 values in the VE table, I don't recall what the actual limit is, but I bet it's 254 (8 bit maximum). I know this max VE of 100 has caught some people in the Delco world a few times. Simple adjustment to the BPW, or the base calculation (differs in some Delco applications) and you can them get the values all below 100.

So far I have not used any of the "extra" features that wouldn't be present on a Delco, no flat shit, or anti-lag, nitrous control, boost control, etc, since I have no turbo, nor nitrous and it's an automatic, so nothing to really control there. I will be playing with these features on the next MS equipped car, my Datsun, once I finsh assembling the engine which is nearly complete. I will be testing anti-lag, flat shift, etc

So both systems are good, one requires more electronics knowledge, due to the needed internal modification (*except MS3Pro), where as the other requires more hardware knowledge to use in a non stock application. So pick your poison, and if you need some of the features that the MS has that the Delco doesn't, well then you'll need to look at another option, such as the MS3Pro, if you really don't want to get into soldering up circuits.

Just to mention the MS3Pro, it has all of the features of the MS3 WITH the MS3X board added on, but in a moisture proof case with AMPseal connectors and nothing to modify on teh board to get any and all functions to work. What it does require though, is the ability to add on external circuits depending on what you are trying to run. Some injectors will require injector driver boxes (for Low-Z), or add on coil control boxes/ignitors, for "dumb" coils, relays for many of the simple on/off circuits. I've installed one of these on a friend's car that previously had a FAST EZ-EFI 2.0, and it runs SO much better with the MS3Pro, though we also did swap to MPFI at the same time, so I'm sure that was a factor as well. If I had the money I'd likely go MS3Pro, but I don't, so I'll use the DIY version, and that way I do get to play with the soldering iron and electronic bits I have on my bench which is fun for me.