Good evening, RaNDoM MAI...
I am currently running an NEC MultiSync FE1250+, the forefather of the DP2070SB. While my monitor does not have the new model's SuperBright mode, the tube is the very same 22" Diamondtron NF, and I must say that I absolutely adore this monitor! The DP2070SB, being the Mitsubishi high end monitor based on this tube, happens to have more advanced electronics, which allow it to push to a higher maximum resolution (2048x1536, as opposed to my NEC's 1944x1440)...
Sitting right next to my FE1250+ is a Hitachi CML175SXW that I use on a daily basis as well. This is one of the new 16ms panels that compensate color gamut range for quicker response time for better gaming response. I have compared this LCD to both, my NEC FE1250+, and my ViewSonic P95f+, via both, analogue, and DVI, and must say that in terms of response rate in games, even this LCD stands no chance against a good CRT. If heat and space are no problem for you, and you plan to game at least somewhat seriously (although primarily FPS-genre), a CRT is still the best way to go.
Needless to say, LCD panels don't hold a candle to CRTs when it comes to color gamut and blackpoint. Doom3, for example, is a game that relies heavily on good black/grey/white contrast, blackpoint and response time, due to the unlit nature of most places on Mars and in hell. This is the main reason why I probably will never switch to LCD for my desktop graphics work; the color gamut and blackpoint are awful, and make color matching and image work extremely difficult to do accurately. With luck, OLED displays might be the solution.
There's also always the issue of native resolution. Even the LCDs with the best logic still get noticeably blurred once you go out of the native resolution of the panel. When it comes to gaming, in particular, it is critical to be able to change resolutions without suffering image quality loss. CRTs don't have this problem except in the case of poor quality graphics adapter filtering in combination with very high refresh rates, and even then, the effect is hardly noticeable in gaming situations (but much more obvious on your desktop).
I do happen to know that you're also a member of the SilentPCReview community, and I just wanted to add that many LCDs generate zero noise (my Hitachi is a good example, although my older Samsung 151P made a buzz noise at any brightness setting under 60, even though its power circuitry was in a separate power block!), while it's almost impossible to find a CRT that is completely noiseless (although some people say that if you can manipulate your resolution and refresh rate in the right way, it dumbs down the buzz quite well). If your system is putting out extremely low noise levels, the buzz of the CRT could be one of the most unbelievably annoying noises you might ever experience.
Cheers and good luck on your display search!
-Ed