I don't know why someone would tell you to use a high torque servo for the throttle. A standard works fine. For the control surfaces a good all around digital servo is the JR DS821.
You can use it with Futaba equipment. Here's the specs: Torque:72 oz/in @ 4.8v, 88 oz/in @6v. They can be found on fleabay for bargin prices, or go here if you want new ones:

http://www.horizonhobby.com/Products...ProdID=JRPS821

Be advised though, digital servos draw more current from your flight pack.

Birman