So shops have finally re opened since the christmas break and I went and got my new monitor today! Went for the Asus PB278Q, and just thought I'd let you guys know how it is so far.
In the image above I have the Asus PB278Q 27" next to my LG Flatrom IPS231 23" just to show some size difference. Unfortunatly due to having no proper photography equipment I cant really show you color differences.
In terms of performance in games and video I have yet to notice any ghosting or input lag (BF3, Black Ops 2, WoW, Anno 2070, CS:S and CS:GO). In saying that, if you are particularly sensitive to these effects then you may pick up on them, but if you are used to playing on a IPS/PLS panel then I doubt you will notice it either.
In terms of Colour, I am very impressed as it does seem to give a lot better white/grey clarity over my LG IPS231 monitor. I cannot compare this monitor to the Dell IPS equivlents as I do not own them / used them, but I definitely feel it was $690 well spent

I am one very excited man right now!