I am using the 5945 for steering on my 1/8 buggy and I couldn't imagine a better choice. It is lightning fast and very strong. I went from a 5625 (131oz/.15sec.- it's in my elec. truck now) and it was a night and day difference. For throttle you should get something like a 925. Digitals are suspect in the throttle.

I have heard that the newer ti-geared servos from Hitec are excellent. They have new amplifier designs that aren't supposed to blow if stalled for longer periods (like lots of braking). They are supposed to be great for both positions.