the t-max Auto tune is what I'm going to over the winter....I've been looking at everything I can find for the '07's and newer with the oxygen sensors. I like that it uses the wide band sensors and thats why I decided to go with it. Terry Components make a plug and play auto tuner called the Terminal Velocity II that runs off the stock sensors for about half the price, but I've heard a lot of mixed reviews about that one. from what I can figure from everything I've hear and read is that the TV II is a close second the TM Auto tuner if you run close to stock motor. most of the people running high compression-big bore-cammed up engine didn't have anything good to say about the TV II, and would go with the Thundermax. I wish I had it on right now so I could tell from actual experience, but when I get it on there I'll let ya know.