Recently I was lucky enough to find 2 NOS Sony PVM-20M2U monitors for a reasonable shake. Had to make an Amiga -> BNC cable, but they are truly phenomenal. (15 kHz, 50/60 Hz no problem.) 20" is a bit large for sitting up close with low-res Amiga games, fortunately they have an underscan function which comes in handy.
The only problem with buying old, or even NOS CRTs - they are fragile as heck, and even in the factory boxes will often get jostled around enough during shipping to knock them way out of calibration. But if you go through the long process of dialing them in, there is nothing better (IMHO) for classic gaming. The smaller ones like the 1084 usually fare a lot better though than the 80lb beasts.
I agree totally that CRT's are better for gaming. Even at RCA cable output resolution my media centre computer ran modern games at on my 32" CRT TV looked better than the HDMI signal (colors were better and BRIGHTER on the CRT, though I can read text much better) I was actually kind of mad about it... but TV shows look much better.
I almost want to figure out a way to hook up a 21" CRT monitor I have to my old consoles as the LCD's make me angry.
Something I've noticed with the LCD's is that the pixels will distort and such during fast paced action. I suppose this is the unit stuttering and the LCD is showing the actual output as opposed to just bluring the pixels together like it would on a CRT. Though I am not 100% sure why this occurs.
