My WB's are all belt drive, but I do use my son's Viking occasionally. I have to admit the fully powered reverse on the hydro is nice. That being said, I do prefer belt drives for their simplicity and lighter weight.
As mentioned before as you refine your technique, 3 point turns are not difficult, you start to execute them without thought. With the properties that I service I can usually make 3 out of 4 turns by turning up slope and let gravity provide the reversing power when rolling backward. Just feather the controls to control the speed and direction. Even on the flat properties I don't find having to tug a bit to back up that big of a deal. Just my 2 cents on what works for me, maybe give you some added insight, good luck.