Also keep an eye out for HT trade shows in your area, they sometimes have a projector demo setup if you get lucky, sometimes even just semi-small ones have one or two setup, but it's harder to find JVC demos.
I've had so-so luck at Fry's and Best Buys, and I travel a lot for my job. Lately Fry's has been closing down the theater rooms and putting a big TV there instead, not all of them but a lot of them. It's pretty dumb looking to see a 82"+ (however big it was) in a giant theater room with a bunch of projectors sitting in the booth in the back but no screen to turn them on to.
I actually saw a bunch of different models at Fry's projecting onto a wall, didn't help me much though. Most of the ones Fry's has are lower-end models, Epson 3010 and Benq w1100 are the ones I keep seeing and they are almost never turned on and many times there is no screen to display them with. I think a few Fry's do have the Sony hw30 setup, but I haven't seen it yet at the ones I've been to, they do sell it though. Don't buy it there if you see one, it's overpriced, AVS has better prices.