I too, love my 6500ub! I came from another excellent projector, a b-stock Sony VPL-vw60 (SXRD) I bought from AVS. Through the circumstances of a divorce, I decided to leave the system for my kids to enjoy.
Anyway, I decided to go with a b-stock 6500ub. I was convinced it would be a marked step down. Maybe it should have been, on paper. I couldn't have been more pleasantly surprised! The settings out of the box were excellent.
The main advantage were the top-notch black levels. I've never seen "Battlestar Galactica" look so good! I NEVER thought I'd see an LCD display such deep blacks. (Even though it is being helped by an auto-iris).
I would check warranty service. Even if it isn't covered, they have great repair service.
Former USSB uplink operator.