Accessport is awesome! I originally kept thinking it's just a device that I'll only take out when I reflash/tune only. But this thing has all sorts of cool things about it. Just the fact that it shows a ton of the ECU monitors like boost levels, temperatures, and MAF voltage (just to name a few) makes it a huge bonus to making your car faster. Not to mention, the other modes that Cobb has put in such as changing idle levels, flat foot shifting, valet, eco, etc... puts these guys ahead of the others for bang for the buck. As for the install, Cobb has pretty much made this product idiot-proof. It's ridiculously easy to install/uninstall and use all the modes and features.
Just picked one up at Cobb Surgeline.
Those guys are great! Even made sure I had the latest 3.20/21 maps all updated before handing it off to me. Allowed me to flash it right there in the parking lot.