I received my Dell u2713hm from OCUK on Monday and is a perfect screen and has none of the problems associated with this model
Do you notice any of the crosshatch effect which is supposed to be common on this monitor which has been reported on the Dell forums.
http://en.community.dell.com/support-forums/peripherals/f/3529/p/19507989/20369824.aspx
One thing that annoyed me with the Dell was a blue tinge to all the whites. The colours just didn't seem quite right to me.