I replaced mine about 18 months ago with the $ 700 models and have to say, the decent steering only lasted about 6 months and they became as weak as the ones I replaced. I don't have any control problems, just the steering goes mushy really quickly and you're back to differential braking to steer. I would only replace if there was lack of control during take off roll or after the plane stopped flying upon landing. You will never get the steering that a C182 or even C172 can have with their larger rods.
Bill
