Cant really say if it will or wont be better than Superchips for whats listed in your sig (I've only used SCT).. but if you plan to do more later, SCT is the way to go. You can spend another $75 or $100 later and get unlimited tunes too, so as you mod more you can adjust your tune as you go. Superchips is a generic canned tune. The 3 tunes you're going to get the with the SCT handheld are canned as well, but they're tailored to your mods. You tell them what mods you have and they'll load tunes to the handheld according to what you tell them.
that model (9550) can be married and unmarried 3 times if he has used it on 1 truck thats 2 left. once the 3 has been used up you have to send it back to SCT the charge 150.00 here is brand new for 250.00 http://www.airram.com/parts.php?categoryid=919