I've been using two of these in my 8IGHT, (5995TG) and both have performed flawlessly! Basically the same servo as the 5955. They retail for the same price as the 5955, but if you shop around (Web) you can get them for $89.99 each. Theres a lot of racers at my local track using them and all have had great luck with them. Just make sure you set EPA right, otherwise, they will rip your carb. or S.S. off....
http://66.221.209.115/html/hsr-5995tg_ultra_torque.html