IN GENERAL.....
MOST people I've talked to worry about all the different tunes (like I did) and after it's all said and done typically use two tunes, stock and FULL everything
(and stock is only when you have to bring it back to the dealer
)
in a few cases some have heavy things to tow so they may have a mid range tow tune to keep the egt's down, but 99% of the other times they use the HIGH mode... When driven "normally" these seem to be the most efficient tunes and give the best mix of performance and MPG...
given that... as far as FEEL of the power, I like the feature where they lock the torque convertor in the higher gears so that when u have to hit the go pedal there's none of that unlock, decide to downshift, then shift, then go.... it's just GOOOOOO !!! reminds me more of the push I used to get it my chipped 02 7.3, 'cept more so !
even the base tunes from SCT @
www.sctflash.com will give you a BIG grin ! Over and above that, any of the main guys with any experience on tuning YOUR truck type (year and PCM code) will make that tune look like stock
good luck and don't wait too long - you'll kick yourself for waiting and DREAD going back to stock after tuning...
OH, and you REALLY can get betta mpg with them, not enough to justify the purchase, but it's a side benefit !