Did they ever make plasma monitors? If not then why not? A plasma would have deeper blacks and higher refresh than an LCD. I personally use an LCD for gaming and I like them better than the old CRTs. When I am playing a game I usually don't sit around
judging color depth, I am just playing the game. The only thing that truely matters for gaming and LCDs is refresh rate. I haven't seen a ghosting problem with LCDs in a long time.
Plasmas are the closest to CRT I've seen, but it seems no one makes them smaller than 42".