Epson has been so responsive to the industry over the last few years that they've really come from nowhere to capture a top notch listing in the front projection market.
Clearly, those who are buying the JVC models tend to be getting some of the absolute best available right now, and I wouldn't compare the Epson without first noting the price difference.
If I'm able to get a new projector this year (no guarantee), then it would likely be the 6500. But, I may be buying a new home instead, so if I need my money for that, then that's where I'll be spending my cash.