I personally have a 40" LCD with a light sensor, the blacks are better than CRT because of the dynamic adjustment of the bulb brightness. The black and white levels are acceptable, but there is definately some limitations in this area, but in my opinion there is more of a problem on the white side. When viewing the two displays side by side in the dark, the black on the CRT is a light green, and the LCD is a dark purple. That is using exaggerated color names, both displays look nearly black. I imagine if you were to turn the brightness down on the CRT it would be much better, but then you need to manually turn it up during the day which isn't worth the effort to do everyday.
The primary problem with the LCD is slight motion blur with an 8ms display, it is hard to notice the bluring but I do notice clarity decrease when the screen is in motion. It doesn't effect gameplay in any way, for example I can't notice any blurring whatsoever in geometry wars, so it could be a console or brain thing rather than a display issue. I don't see any "scanline artifacts", but then again I am not sure what those are.
I dislike rear projection of any sort, to me they look dull an dingy during the day. I couldn't go plasma because I like watching 4x3 programming using the correct aspect ratio.