Its an awesome monitor. Its just big enough for me, I don't know what people do with huge monitors. Anyways, the 2ms makes the whole difference. You've gotta realize, its twice as fast as the 4ms one, which is twice as fast as the 8ms one, so ghosting is reduced 4x. Actually, ghosting doesn't happen at all. I had a 8ms LCD before, and even though its not supposed to have ghosting, I often got blurirng. Textures wouldn't look as good and such. Non-existent with this one.
I don't know if its worth it for most people. $400 for a 19' LCD is kind of cheap, the 4ms one should be fine.