i am still having the battle of picking a programmer for my truck. but i think i've narrowed it down to wait4me performance. im still just a little confused and im just not quite sure on wat it is. its a hand-held device right? and from what i understand is you pick 3 tunes that you want?is there a list of tunes i can pick from or something? cause i just need and all out performance tune, economy tune, and i dunno. and you simply just plug-n-play? anyone correct me if im wrong and please tell me as much info cause im thinkin about getting it here soon.