You should search these boards, there is a HUGE wealth of knowledge. But as far as the TST goes, I love it so far. You see what kind of numbers you can put down with just the TST, and my poor clutch won't hold what it is capable of. I can't comment on the towing with it yet, as I haven't, but this weekend I'm going to and I'll get back to you on that. For a chip that you can build into, TST is the way to go. If you want simple, plug in, and don't want to upgrade later, go for the Edge EZ or something along those lines.