If you really have the gumption to learn and do tune yourself, then don't even think about a flash.
The AEM EMS is very advanced, a full stand alone without the wiring, with a lot
of reseach you will never need anything else. umiami80's idea isn't bad; go to a pro, maybe have them set up something conservative to get you around, while you study, reseach, and learn. Get ahold of a laptop mod and tune away. Everyone says, "Well I'm just going to do this and this," then the power bug gets them and they start shopping for a 60-1 turbo.
From what I've read here about the UTEC, it's no slouch either;
It's a tough spot, but I encourage you, and all who come to this forum to learn to tune. Both systems are going to be difficult and there is no quickie guide, but both have tech support. With either one, and after some time, you'll have a better performing car over a flash.