Hi Zeven, which one did you get in the end?
I'm in a similar situation myself: I'm looking for a 27" for work (Office suite type activity) and gaming (RTS > FPS) as well as the usual bit of photo editing, surfing, etc.
Leading contender within my ~£250 budget is the Iiyama E2773HDS:
http://www.expertreviews.co.uk/monit...olite-e2773hds. This has good image for the price bracket and the resolution, although probably low for 27", is I imagine for my needs. Only niggling thing is it doesn't rotate to portrait which would be useful from time to time (e.g. PDF and Word docs) but hardly a show-stopper.
I'd be pleased to hear any other suggestions as well as Zeven's experience with whatever he ended up with.