I use mainly Hitec 425BB's in all my 40 to 120 size planes (mainly sport fliers) on all the control surfaces. I use 322's, 325BB's and 422's on the throttles. I have never had a problem with any of these servos. If you want a little more punch, then the Hitec 475BB's (61 oz/in) are only 16.99 and will do for many planes to come.

Curt