I'm probably misinterpreting your requirements, but you should look into Korean IPS monitors. They're generally very cheap, are far better at reproducing colours than standard LCD monitors, have higher pixel densities (1440p@27") and can often be overclocked (90-120hz). The best deals are usually on ebay, shipped from Korea.
http://www.blurbusters.com/overclock/120hz-1440p-ips-monitor...