I am very impressed, very easy to use. User friendly interface alot like the old one with a bunch of added features. Boost control and datalogging built in. 8 external 0-5 volt sensors can be logged. TCC control, AC clutch control, 4 stages of nitrous, knock sensor control, built in service engine soon codes. The price is comparable to Big Stuff 3. The help menu is great pictures and even some video. I think my customer will be very happy with it. I am thinking about getting one for myself.