You can read about my truck in my signature, so I won't go into details about. I bought the bullydog power pup and I have to say for picking it up under $300 I'm moderately satisfied.
I will back everyone up and say gauges are a must. If you're not afraid of driling your manifold, and boost shaft, then you can get a nice package of glowshift gauges (Trans temp, Exhaust gas temp (a MUST have if you're tuning), and a boot pressure gauge) with a pillar to mount them in for around or under $190. If you need someone to install them for you, add about 2 hours of labor at any shop.
Like everyone will tell you, you have to pay to play. :$:
The problem with the bullydog tuners is that you'll run really high EGT's when you're tuned up and pushing the truck. By itself, it can't program to defuel either. If you're just looking to play, this is a decent setup.
I'm looking to get rid of mine and go with the smarty though. I'm willing to sacrifice tuning on the fly for the over all performance and well managed tunes they offer. I'm a little harder on my ruck though. And if you're looking to play hard, definetely look into a trans upgrade. Most of these tuners will let you shred your stock tranny especially if you have an auto.

eelout:
Good luck!