I have a YP1000, no complaints so far. I've used it quite a bit, owned it for more than two years...
It'll range trees and brush out to just under 800 yards. To get a 1000 yard reading, you have to hit the side of a building, car, etc.
This said, I agree with Gary Paugh. If you have the cash to spring for the Leica, that's probably the best unit around these days. It's not that much more expensive than the Bushy, and the Leica glass is, well, Leica glass... /ubbthreads/images/graemlins/smile.gif
Dan