I sent in my stock file on Friday and waiting for my tunes.
I get worried reading some people's experiences with the tuning. I guess you can't have it all but I was looking for the ability to turn it up when I want some additional performance but keep it mild when I have the kids and wife in the car. What worries me is that this is my driver and I don't want to change the comfort and cruising factors. I will drive to Miami back from Orlando at least a few times a month (8hrs on highway) - using cruise control and hope it won't change that ease of driving for me.
Ideally, these flash tunes aren't something you would want to be continually changing. Can you? Absolutely. Trying all the tunes offered, settling on one for majority of your uses, and letting ecu/trans become familiar with it is your best bet. Say you were doing an event one weekend, i could see flashing to a more performance geared tune in the days prior and maybe going back after that, but a daily or even weekly change isn't something i'd recommend doing. Not so much the pita of spending the 10mins or so re-flashing/power cycling etc, but about your ecu and trans adapting/learning to something consistent.
I'd rarely offer this over a flash tune, but getting a plug n play controller, i.e. flowmaster deltaboost, afe scorcher, or equiv may make more sense if you are set on doing daily/weekly on-the-fly changes. That said once you do add one of these tunes, you will fine a nice balance of good safe power and drive-ability, and won't look back or need to change tunes. Even with perf tunes, the gen2 normal mode (not sport) its pretty tame in terms of drive-ability when not getting aggressive with pedal, which was not the case with gen1 tunes