I already got a 2008 RT and it has gained like 150k miles already. It's still good, don't get me wrong, but it would probably cost a lot to do the fix. Anyway, I wanna get the latest R/T. As I said I'm quite loyal to this Durango. I like the 8-speed transmission. Is the upgrade gonna be worth the money or should I stick with my old one? To those who also upgraded, thoughts?