I'm no expert by any means, but...From my little experiance, the best CRT Monitors i have ever seen/used are the Iiyama Visonmaster Pro's.
I would have got one myself if i had the room in my bedroom (they're huge)...I actually regret buying my Viewsonic VX924, despite it being a gorgeous LCD, i got it when i was getting in to gaming and i now realise i should have gone for a CRT.
However, as you said CRT's are becoming a rarity. In fact, the Iiyamas, because they're so good (in my opinion), seem nearly to be the only ones which are manufactored now. If you want one, i'd advise Ebaying it:
Check that out, 22" and it'll probably go for under £100!
Hope i've helped a little. Good luck, and report back.