This thread has some interesting information and debates.

I often wonder if the debate about which is easier to tune 1227165 (MAF) vs. 1227730 (Speed Density) is factor for wanting to use the 1227165?

Back in time, before TunerPro RT, the debate winner was for MAF. Fast forward to now, with Tuner Pro RT, the Speed Density is the clear winner of the 1227165 vs. 1227730 which is easier to tune debate.

The internet is filled with information about how MAF is easier to tune than Speed Density. It's interesting to point out, NONE of the MAF supporters mentioned or even referenced the tuning software used for tuning the MAF system.