Hitec Digital Problems?
The Hitec digital servos are programmable, a huge advantage over using a match box on all surfaces with ganged servos. Each servo can be perfectly matched to the other; you can set the end point, the center point, deadband, speed and direction for every servo in every airplane you will ever own. The Hitec servos and the programmer are about the same price you would pay for just the servos alone from the other guys. Compare this to possibly needing 5 matchboxes per airplane. That's $300 more per plane even if the servos were the same cost, which they are not.
There are no problems with y-harnesses with Hitec digital servos. The couple problems we saw were from inferior y-harnesses that would not allow enough current through them. Use a heavy duty 22g Y and you will have no problems.