I won't deal with Hitec, they are junk in my opinion, I am glad to see others having good luck with them, but I have been burned too many times....
A freind of mine had an 8800S (.08@105) and had no problems turning the wheels on his T-Maxx... I really don't see much problems with the 9000S in a buggy???I mean it has over 300 in. oz. of holding power..... And companies are putting servos that have half the power in rtr buggies and calling them "high torque".....