Ok, so first off, I run with a 2 monitor setup on a Palit GTX 670 2gb. I Currently have a 21.5" Asus VS228H as my main monitor (1920x1080) and and older 23" Asus (1680x1050) as my secondary monitor/speakers.
I am looking at picking up a new monitor to replace the older monitor, and would be looking at getting a 23"-24" monitor to do that. The one thing is, that I would want it to have speakers built in.
I know that built in speakers aren't really much good in general, but as I don't have my own place, I have to either use headphones for half the time, or keep the volume turned down low I don't have that much room for plug space (2x monitor, modem, router, pc and desk fan use them all up!), so the freedom to be able to sit well back with my feet up while watching youtube or blu-rays, and not having to unplug my fan during summer is the reason i would like to still keep at least 1 monitor with the built in speakers.
Not worried about having it capable of being connected to multi-screen mounts (since i have no plans of going to any more than the 2 screens), main thing i would worry about is the colour clarity / contrast - I hate the "washed out" look of some monitors.
My main uses of the screen (as it would become my main screen) would be hd video (blu-ray / streaming) and gaming.
My budget would be (up to) ~£230.
If there are any 27" screens of note that would come "close" to that budget, then I may consider those as a possible choice.