Thanks for the thoughts on the other tuners. Most of us are already aware of the other options, but are choosing Dinan for a couple specific reasons:
A) we already have a Stage 1 Dinan tune, so an upgrade is only a couple hundred $
B) we like the Dinan warranty on the ECU tune
C) could be a combination of both
In any case, thanks for the help an suggestions but we are truly looking to see if anyone has ONLY done the software WITHOUT buying their midpipe.