What kind of tune r u looking for? Daily driver, tow, racing etc???
In my opinion
IDP extreme X is the fast hardest pulling tune that I have but it is not the best tune for DD and no towing with it. I use it for Dyno, racing, and showing off the truck. It has the light switch affect and the shifts are pretty hard to account for the extra power
Gearhead srlxx - great tune for daily driving. Power is very linear and trans shifting is great (not too hard not too soft) I often daily drive with this one. The power is not quite as good as IDP extreme X but it is a blast for DD and light towing.
TSD SPD - very sought after tune and it did pretty well on my truck... but it was the weakest/slowest of my tunes. It has a ton of power down low and shifts great but feels like a stock truck at 75mph and flooring it. Power was linear with no light switch affect. I am still working with the tuner to get this figured out (could just need to be adjusted)