Basically I need a monitor that has low input lag, a quick response time, oh and it has to be HD and from a UK website :) Good colour reproduction could be useful as well but I know that a fast IPS panel for this price is just not possible :)
im thinking about a new monitor just the last few days.I also have the same budget but i could find a ips screen with a acceptable response time (i will go to the store in a week to check the response for myself) these were my options: LG237l-bn http://www.amazon.co.uk/LG-IPS237L-BN-Widescreen-Monitor-5000000/dp/B008PBXKG2/ref=sr_1_1?s=electronics&ie=UTF8&qid=1364736280&sr=1-1#productDetails
and the iyama prolite x2377hds-b1 http://www.amazon.co.uk/iiyama-Deutschland-GmbH-X2377HDS-X2377HDS-B1/dp/B0098PDAEG/ref=sr_1_3?s=electronics&ie=UTF8&qid=1364736467&sr=1-3
im gonna check them out in a week or two and will make my decision then i suggest that you do the same.