futurepilot03 -
I've got Futaba S3003's in mine (standard). Their cheap, they're strong, and you can beat on 'em. =) The only different servo i have is the one for the engine throttle. And since it's mounted close up to the engine (i.e. lots of vibration) I used a HiTech HS-82MG (metal gear) servo to minimize the possibility of failure in the servo - as it is rather important to have a good working throttle servo; you think?
Oh, you'll need 2 12" extensions for the two aileron servos and one for the rudder servo if you mount it in the rear of the plane. I mounted my rudder servo up front so i didn't need the 3rd one.
Happy Flying & Cheers!