I've used quite a few HS225's by Hitec. Other favorites of mine include JR 3021's or 3121's (older servos, but still nice).

The throttle servo can be something like an HS81/82/85 Hitec, S133 futaba, etc.

Quite a few guys are now using digital servos, things like the S9650 Futaba, the digital version that Hitec makes of the 225-sized, I think it's the 5425 or 5245, something like that.

I just got a hold of some Spektrum H5000 servos to try, they'll probably go in the next plane I build. These are very similar to the Align DS510 and Savox 1350 servos.