I hate to disagree, well, no I love to but in this case I will do it nicely
CRT monitors are yesterdays news. There have been no innovations in them for years, the "Good" ones are hard to find now, the ones you will see are all average. Their only good thing is that they are cheep! They do use more power though, so if power is expensive it will cost more per year.
LED is where its at now. They are very good for gaming if you get a decent one. Anything with a real rate of 16ms or less is fine for gaming.
They are more expensive however. I good 17' one is better than a 19' CRT. I have a 19 inch one, one of the best, and it was worth it.
If all you care about is $ then get a CRT. If you want something cool, good and new get a LED. If you decide to go LED give me a PM and I will send you some reviews.
There are some nice CRTs out there if you look, and used ones can be a good bargain.