The real advantage to BB servos is they won't get sloppy with play as fast as a Bushing servo, Had some bushing servos get real sloppy on my and they where not even that old, could wobbly the control horn and now I usually use Hitec 425BB servos, Good torque, Duel BB and about $15 each. Take a look at http://www.servocity.com/ServoCity/index.html They ship fast and have free shipping with good prices.

Dauntae