What's the difference between this and a power commander, I don't know which is the better of the two
They really are very similar Jay. Look up Bazzaz Channel on youtube. You will see what they are. The main advantage of Bazzaz over Power Commander is that the Bazzaz also controlls the secondary injectors. In effect its a Power Commander 5 with a secondary fuel moduke built in. The drawback is you cant add any other parts, such as quickshifters etc but the autotune facility is excellent.