Servo help for 4wd please...

[DomRC]

I'm shopping on eBay for a decent second hand servo to launch my 1/10 4wd career with (will be getting a Cat). Needs to be something robust and torquey.

I'll be using a normal (non HRS) 40mhz FM receiver, so does that mean digital is pointless (or not even possible?).

Have seen recommendations for Ace 1015, KO2413 and Futaba 9551 which I should be able to pick up second hand, but believe they're all digital. Am i best to get a decent analogue one? Any suggestions?

Cheers