It's hard to compare, because as someone else pointed out, you're generally not comparing a $500 CRT to a $500 LCD. I've had the opportunity to use a > $1000 Viewsonic CRT before, and I didn't think it was all that and a bag of chips. Certainly, it was an impressive monitor, but using the huge maximum resolution meant you sacrified your refresh rate for it, and that hurts a _LOT_ on CRTs.
For an apartment dwelling couple like us, the size and weight benefits of an LCD totally obliterate any image quality loss or extra expense compared to a CRT. When we move (and that's a certainty), CRTs would be another couple hundred pounds of weight to carry. I laugh when people tell me they've got 60" rear-projector sets in their pads - you're just asking to get screwed by the moving company on "super-large item" charges!
You also can't find many widescreen CRTs. That's a big deal if you watch lots of 16:9 material (HDTV, DVDs, Xbox (360) games).
-Erwos