Thanks for your help so far.
I take your point with the Dell, I think its off the list now.
I am leaning towards 120hz, I think it is going to be the standard soon and love the idea of a smoother desktop and better gaming experiences. I plan to update my graphics card but was looking at an ATI 6950, so I guess 3D is not an option right now.
I read on a particular supermarket's site that the ASUS suffers noticeable ghosting when playing DVDs. This isn't even pushing things to limits. I don't really expect exact colour matching at low end prices, but I would expect a watchable screen. (cable quality could also be a factor).
Possible top choice contender is Benq XL2410T