I'm using the Hypertech power programmer on my 94 right now, only using the lower fan temp, calibration for the gear change, and trans shift firmness.
Didn't notice a difference with the "performance tuning" at the track or on the street.
If you have any plans on doing alot of modifications to your car I would buy theLT1 Edit software. You'll need a laptop.
I'm planning on going to LT1 Edit myself this spring.
Otherwise if you don't plan on doing much more than a cold air kit, exhaust, and a few other small things then see if you can pick up a used programmer. I got mine for $150.