I don't think ghosting is a problem with any but the cheapest LCDs anymore. Response times have gotten a lot better; IIRC, they're down to 8ms or 4ms now? I have an NEC LCD1760NX, which is a couple years old and had a top-notch pixel response time (12ms) at the time, and have never noticed any ghosting.
Even my 8ms LCD works for gaming. Blacks aren't what they could be, but it is really a minor complaint.