I've been looking at this monitor daily waiting for a sale - best price so far is around $700-750. Would love to see this set drop - some reviews online stated the image quality was marginal. Hard to believe, the specs are amazing for this set.
I don't see how you could go wrong:
IPS alpha clear glossy screen
HDMI 1.4a
Panasonic
Most importantly it's one of the few displays that actually has 1080 lines of moving picture resolution - very few screen have this capability - most use an interpolation of the image = less lines of full HD resolution in use while gaming or watching blu-rays.
You'll defintely be able to tell there's a delay utilizing a mouse - if you have it connected to your pc. I don't think it would be substantial using a game controller - not enough to where it is unplayable.