Pull-pull is by far the best way to go for precise control. Installation can be a problem though. The main thing is to be sure to NEVER have any negative Ackerman. If you do not know what Ackerman is, there are several discussions of it in the forums. A bit of positive Ackerman is okay, in fact IMHO somewhat desirable as it is far easier on the servos. With positive Ackerman or neutral Ackerman, you just tighten the cables tight enough to have no slop or sag at neutral. If you get a bit of slack in the non pulled line as you move off neutral, you have a bit of positive Ackerman but that will not detract from the ability for precise control and has absolutely no negative effect. I set up all my 1/4 scale and many of the smaller ones with pull-pull on both elevator and rudder as it is so reliable and easy to do once you give it a try.