If you don't care about 3D then the Dell U2711 is one of the top end 27" desktop monitors around (without resorting to crazy pricetags associated with professional grade monitors). It doesn't have built in speakers but you can get the Dell soundbar (which can be attached to the monitor) for a little more. I'm not sure what version of HDMI the U2711 (or the PS3 or your BD player), you'd need 1.3+ on both ends to get 2560*1440, else your'e stuck with 1080p (not native res) - so check this if running at native res matters to you. This monitor does have pretty hard AG coating which can be a killer for some. You can also consider the Apple 27" Thunderbolt display if you're willing to hunt for a Thunderbolt to HDMI adapter.
On the other hand if you can get a 30" (I'm assuming space is a constraint for you) then you would have a lot more options - Dell U3011, HPZR30w immediately comes to mind. Not sure how many of these have built in speakers, though.