2012 5.0 running the 87 performance tune for about 3000 miles and I'm happy with it.
Stock the truck didn't seem to shift how I would of preferred it. I had no issue with lack of power/torque. Previous truck was a 05 4.6, so the jump in power was great.
After installing the tune, the shifts were a lot better, the initial throttle response was improved. As far as, holy crap it makes way more power...not so much. Granted it's only the 87 tune so I wasn't expecting it to be very noticeable. After 3000 miles it's hard to say how much a difference it is. I was averaging 13.6 on the readout, now it's 13.3. We got hills all over and I don't get out on the highway often.
I will say now that the temps have dropped here 30-40 degrees in the last few weeks it drives great.
I haven't tried any other tunes on this truck from anyone else so I can't go round saying 5star is the best, or the worst. I can say Mike returns emails promptly and is helpful. Overall, I'm happy with what I got for what I paid.