I have been very happy with my JR HV servos. I burned up a lot of 9100T's (9 last season) and JR finally replaced them with the HV servos for me. I have had no failures and have been running them for almost a year now in my losi 2.0. I also have a 7955 that I run in my losi 2.0E and it a great servo and at a good $.