I would say this forum is your best bet for product reviews on the mutliple programmers that are out there, just do a search. I believe the two most common are the superchips (SC) and diablo sport predator (DSP). This link
should give you a little information on the two. I use the DSP and would suggest it to others, I can't speak on behalf of the SC.
268 Comp Cam, Coated Pacesetter LT Headers, Y-pipe, Custom Exhaust, K&N CAI, Edge Billet 3000 stall TC, 4.10s, Auburn LSD, E-Fan, 180* t-stat, tapered/bored Fastman TB, 20% UDP, DSP, Hemifever Custom Tune