I'm in the same boat actually, looking for a new CRT. I purchased a Sony Trinitron back in '98 and it's still kickin but it's a 17" and its not capable of the higher refresh rates modern monitors can display at. I bought a Samsung SyncMaster 793MB and it's pretty good, it's a hell of a lot brighter than my old Sony, but I have seen differences between the two. Problem is, it's not a Dynaflat tube, but a Magic Bright tube.
1 = Max resolution is the exact same with my Sony, at the same refresh rates. This has been verified by running it on two seperate boxes, one Windows and one Fedora Core 2.
2 = High resolutions = not so clear text. On my Sony, text looks a little crisper, but if you turn the brightness down (the Magic Bright settings) you can get away from the fuzziness.
3 = Screen is set deep in the monitor, so deep in fact that the edges sometimes look dark for some reason. I'm actually picking up the shadow from the edge of the monitor casing being projected on the screen. No big deal, just a little wierd sometimes. I just have to move my lamp behind me or behind the monitor on the desk.
This 17 incher is actually going to my parents, but I'm contemplating buying a Samsung 19" in the Dynaflat variety because it CAN do the higher refresh rates at higher resolutions, but I am also wondering about the NEC/Mitsubishi monitor that's almost like this. Problem is, it costs about 100 bucks more than the samsung. I live up here in a high altitude area (7000+) and have experienced high failure rates with viewsonic monitors like crazy, which could be due to either a bad batch of monitors or elevation or something. This samsung looks like a safe bet but has anyone heard of the NEC/Mitsubishi?
BTW, if you froogle the part number for the 997DF, I got Dell as the lowest price + free shipping. Interesting.....