From my reading in this forum, I have seen several people compare the JVC to higher end DLP's like the Samsung a900b or Runcos/Planars. Let's say comparing with a Planar vs. the JVC, I'd say at least half preferred the JVC and the other half preferred the DLP. The thing is though, most of these .95" ones are FAR FAR more expensive than the RS-45, so it's not even really a fair comparison. I think it really depends on a user's viewing habits. The DLP has better motion, but I don't think the added sharpness is going to help anymore, the RS-45 is really freaking sharp, I'd say there are only a handful of DLP's under $3000 sharper than the RS-45, the Benq w6000/w1200/w1100, and the Mits hc4000 is a TINY bit sharper, but the Mits isn't as uniform for sharpness across the screen as the JVC is. I haven't seen a single LCD projector be sharper than the JVC RS-45, the older Viewsonic Pro8100 LCD and Mits hc6800 were MAYBE as sharp, maybe, but probably not, I think the RS-45 is sharper even then those when you evaluate it from seating distance. The biggest difference between a JVC and any DLP is going to be motion and ability to handle a poorer signal for TV, DLP's are better at that than LCOS or LCD.
If you play any dark movie (Harry Potter or anything like that), there is just no DLP that is going to have a chance against the JVC once the projector is properly calibrated.
My RS-45 has just incredibly superb sharpness for a NON-DLP from seating distance, text looks very DLP-like. Let me put it this way, even for HTPC text, the JVC is the sharpest projector I've owned other than the Mits hc4000 (and I wouldn't say on text the difference is even noticeable). JVC has figured out how to make some really sharp projectors even with LCOS technology.