See if you can get a B-STOCK RS-48 when they get more numerous I assume in 6-12 months from AVS.
Hopefully AVS will get some of these around 2.5k (maybe I'm dreaming), but hey I think some B-Stock Rs-45's went for $1,600 or so.
I'm going to try a B-STOCK next year if I can, stick with JVC, cause you're attracted to better the black levels sounds like. I'm not even a black level fanatic and I think my JVC is superb.
Tell you what the lens on my JVC is impressive, after using both the Benq w7000 (sharpest .65" DLP there is) and my JVC RS-45, I really think the JVC has nicer text in HTPC.
The Benq has slightly higher native sharpness (and I mean barely barely higher), but let me tell you my very well converged JVC seems smoother on text, less SDE, less ringing.
I enjoy reading on my HTPC with my JVC more than the Benq I think (but it's close). The JVC is just a better projector overall I feel. Also, I really think DLP only pops more on bright scenes less than half the time, in certain camera work the JVC keeps up nicely. As far as motion, I am not that sensitive to it.
I think after owning a JVC, I will be hard pressed to own something else. I am also getting bored with 3D and the big RED SELL button is getting an itch for me on the Benq.