I have a Delta 36-725, I upgraded from an old craftsman - both were direct drives and since I have no experience with belt driven saws, I can only say that my Delta is a fantastic tool.
I've had for 2 years now, and after tuning it, I can do any task I've needed.
It's very quiet, and so far has cut everything I've put through it. From: Logs to plywood to hard wood. From dadoes to miter sawing it delivers very accurate cuts (within 1/32).
For the price is was and remains the perfect table saw for my needs.