Here's what I've been using on my steering for awhile.
http://www3.towerhobbies.com/cgi-bin...&I=LXNRN6&P=ML
Works great, no problems yet. It's a rebadged hitech, I think 5955.
I haven't used this one, but everyone has said good things about savox.
http://www.amainhobbies.com/product_...ium-Gear-Servo
If either of my hobbico ones die, that is probably the next one I will try.