bybycop - I had a Banks Stinger on my truck, and have since put it up for sale. It worked great, zero problems. decent power, lots down low. however it definately won't win if you're going for MAX HP (like some guy with a strip layin' black doooole). However, if you just want some very safe power (it won't let you over-temp the motor) that works geat for towing then its a good idea.
If you want power, listen to Mackin... then again, he eats tranny's for breakfast too.
I also like the predator, because as well as increasing power, it functions as a OBDII scan tool, can adjust for larger tires/raise speed limiter, and its cheaper.
however the Juice is a fine product.. as a matter of fact some juice guys will probably try and spank my predator this weekend at the Sacramento get together.. heheh