hey
I have always used old CRT screens however they are harder to find new...... 
Well there's no reason a new CRT is needed. In the US, a 15kHz CRT TV with an RGB to component transcoder can rival a 15kHz CRT arcade monitor, and they are a dime a dozen on Craigslist, not hard to find one in good condition. In PAL territories, there are tons of great CRT TV's with RGB SCART inputs.
I wil be buying a 23" or 24" monitor blind from amazon or eBay, so any specific recommendations from near the top of this list ?
If you can go a little bigger, the third from the top, LG 27EA33V, looks like a steal at only $250. I think I'm going to get that for my next computer monitor. The input lag rating is top notch, but I'll check a few reviews to hear about picture quality before pulling the trigger.
The process is generally the same for choosing any flat screen, look for the size you want, start at the top of the list where input lag is lowest, and check out each model matching that size as you go down the list. Just check reviews to make picture quality is decent, and make sure you can find it at a reasonable price.