my sport models I just leave to proportional throttle. My 3d ships I acually spend the time to set up a true linear throttle curve. This is almost manditory for helis. If you plan on going 3-d I would spend the time now learning how to really set the engine up. getting it as close to linear as posable. It does take some time and can be frustrating.

I've found the easiest way is tach the high end. Tach the idle. Divide by two. set the middle of the curve. then work in the two mid points