Well, I just bought an old LCD for 50 bucks. It's a 15" with a 23/25(I can't remember)ms response time.
Honestly, I don't mind it for gaming. I really can't tell much of a difference over my old CRT. The CRT had a higher res, but it hurt to look at it at that res (60hz at 1280x960) and the picture looked like crap. Also, I used to have horrible headaches, they're gone now.
But, 15", though the same viewable size as my CRT, is small. And though I barely notice the ghosting, it is there. Plus, it has a max res of 1024x768, so my machine's true potential is wasted.
The guy I bought theis from said he'll buy it back for the full 50 dollars, and I think at max, I could spend another 150-175.
I thought this one looked nice:
http://www.newegg.com/Product/Produc...82E16824208003
Or I could get something like a Samsung 713N for around 250 dollars, but honestly I'm not too impressed by the ones we have at the lab.
EDIT
Any suggestions?