I'm not sure who they're haha tuner is now, but if you're worried, why not just go with mountune? IMO the difference between the big reputable tuners that you read about here is only personal preference. Yeah tuner X may get 5 more whp than tuner Y, but the difference is more in the power delivery and throttle map. Oh and some have other options like the crackle tune.
Did plenty of research before I picked a tuner. Received my Stratified 93 Accessport last week, have nothing but amazing things to say about it. Completely changed the car, I'm not missing my 04 cobra as much anymore lol. I've heard good things about FSwerks so I don't think you can go wrong either way.
From what I've heard, the mountune accessport will only allow Mountune files. You can not put any other Company tunes on it. Could be wrong tho.