I'm interested too. I got a super chips handheld for my 04 GTO and hated it becsuse it was practicly useless....then broke down and got the $650 hptuners setup that hooks into your laptop.....i was and am extremely happy with it because of all the things you can do with it
so far pretty impressed with it, only have the 87 tune because thats what I have been filling up with because of gas prices, but as soon as that tank runs out going to fill up with 93 and run the 93 tune and see how that is. Then eventually Ill get it run on the dyno and send that info to hemifever and he will work out a even better tune for all my mods. The SCT tuner is pretty handy, pretty easy. Overall I am pleased.