Hey guys. I'm searching around for a Duramax and am unsure on which would be the better one to have. Not a fan of the new styles, especially the interior. To my understanding there are two versions for 06, the LLY & LBZ, and 07 is the LBZ. I've read that the late modle 06 LBZ ones are the better ones. Is there anything different between the 06 LBZ and 07 LBZ? Or are the 06 LLY & LBZ just as good, with the exception or the LBZ being abit more powerful. Thanks