I have a 21" Dell LCD at work, and it's OK at best. When my old NEC 5FG 17" CRT just died last month, I replaced it with a ViewSonic G225f 21" CRT. I do a lot of Photoshop work, and I do my own printing on an Epson 2200. The average LCD can't be properly calibrated, and LCD's that can be fully calibrated are very expensive. I just finished calibrating it last night, and it looks fantastic. The shadow detail is amazing, way better than my old CRT, and better thatn any LCD I've seen so far.
It's huge, but it's actually not much bigger than my old NEC, which I bought in 1994. Back then, 17" CRTs were big and heavy. The new 21" is only one pound heavier, and is still one inch shorter than the old 17". Desk space isn't really an issue for me, so I really don't care much about th space savings of the LCD.