I ride a 2006 800 REV Summit 151, wanting a new sled, but not sure on the reliability yet as it would be the hubby as my mechanic. I don't want to put him through that yet, as he just got a T-Apex, that he is learning all the mechanic's on. So I am getting new stuff for mine, some engine stuff and some pretty stuff!! HAHA, it is a girls sled ya know ;)....My 12 year old son is riding a 2002 Summit 600, he is kickin' it good w/ it!!