So what is left budget-wise for monitor?
In basic terms you need to decide:
120Hz -Fluidity of movement, unmatched smoothness and responsiveness
VS
IPS monitors - Ultimate image quality, vibrancy, colours, definition (and depending on budget) resolution.
EDIT: IPS Panel monitors are as above exemplified here:
http://www.overclockers.co.uk/showproduct.php?prodid=MO-036-DE&groupid=17&catid=510&subcat=
Great image quality but expensive.
Yes we're all waiting for IPS 3d monitors
@Vinnie just bcos it's a £2k system doesn't necessarily mean IPS monitor, it depends on the person uses. My rig totalled something like that and I chose 120Hz over IPS bcos I only play fast paced games and I'm so glad I did.