My impressions?
Well it's pretty awesome, the HC5000 did seem sharper over all. The Panasonic was a little better on my Laserdisc source which is what prompted me to try a different projector, but my color space seemed off with LD. (svideo) Basic calibration from DVD seemed close enough though.
I didn't mount it yet. I have decided to try yet a third projector. I'll be selling off the two I decide not to keep. Next up, a Sony Pearl.
I dunno if a good scaler will help with the old source or not.
It seemed a good bit brighter than my HC5000, but the HC5000 also has several months on the lamp. My room is pretty much a bat cave.
I don't post in this section a lot, because I am no videophile. I don't see near the difference others post about between any of these LCD 1080p projectors. But one thing I do know....
You cannot demo one of these in any theater but your own, with your own sources. Results vary widely from room to room, much much more than projector to projector.

It will take me a few weeks to get a Pearl in to try. I really don't want to un mount my current projector unless I am secure I will be replacing it.