I started flying my 1/4 scale Cap with Hitec 605's all around (two on elevator) and a 615MG on rudder. I had the large arms and big throws on high rates. The plane always seemed to 'wander' never truly returning to neutral after high deflection manuevers.

Watching the elevators on the ground, the centering (or lack thereof) was very noticable.

I put Futaba Coreless (9202) on elevator halves and ailerons and it is a different airplane. When I release the sticks it locks right into neutral trim. Also the sensitivity to very small sitck movements is much better. I put one 9202 in and left one 605 on the other elevator half during the changeover. The 605 didn't even respond to very small stick movements around center that the 9202 reacted very quickly to. In the end, the increased response gives the plane a lot more elevator 'feel' on low rates and made landing actually much easier.

Yes the 9202 is a $65 servo vs a $30 Hitec 605. But there is no comparison in this type of application.

You mention $150 servos. Not neccesary in the 1/4 scale range. There are several good coreless high torques in the $60-$90 range that will work fine. I now use both JR and Futaba coreless models with good results. Save the $150 mega torque digitals for the 35% Gasser with the barn door control surfaces ;-).