I own the Studio Experience Cinema 13HD, which is basically a PLV-60HT. I have been very happy with it.
I can't speak for the internal scaler or the quality of HD programming (yet), since I've used it with an HTPC right out of the box, but DVD playback is phenomenal. I haven't noticed the solarization that others have complained about, and while I've seen some posterization, it really looks to be in the source.
Color fidelity is excellent... contrast is excellent. The black levels on an off-white wall are ok, but I'm looking forward to getting a Grayhawk in the near future (and hopefully convincing my wife that painting the screenwall a dark gray isn't the end of the world).
The image is definitely not as smooth as a DLP, and after owning an lp350 for a bit less than a year, it was noticeable at first, but mostly in small text on the Windows desktop... and now that I've gotten all of the display settings tweaked, it has really become a non-issue. I'm also sitting 9ft. away from an 87" diagonal image, so pixel structure is more evident in such a small room.
There is also a project underway (check out the PLV-60 threads on
www.thebigpicturedvd.com) to bring a calibration tool called SMART to the PLV-60. The person working on the project there has reported a substantial increase in contrast ratio following initial calibrations, making an already excellent image even better.
I watch a good mix of 4:3 and widescreen sources, so I wasn't sure at first whether or not to go with the PLV-60 or the XPN-21, but I'm glad that I went for the 16:9 projector. The extra-wide PC desktop is very cool.
I'd definitely recommend the projector. However, in a more general sense, I would strongly recommend against buying anything based on 3rd party opinion, posted screen shots, etc. Either visit a dealer and view a demo or arrange an in-house demo if possible... much better to see a projector in your own environment. You may or may not be sensitive to screen door, rainbow (if you're auditioning a DLP) or whatever other issues exist (and all projectors have their issues). It really comes down to your personal preference.
As far as the 13HD (PLV-60HT), I believe Studio Experience has a rental program going on right now where you can rent the 13HD and try it out, then apply the rental to the purchase if you buy it. I got something the mail from them the other day about it, but I didn't pay too much attention since I already own the projector. I'd suggest giving them a call.
-Mike
[This message has been edited by mhamel (edited 09-25-2001).]