At the same time, refurbs go through a second quality control check that is more rigorous than the first. I hear that most refurbs are actually from people just returning a perfectly good piece of equipment.
I'd say the refurb is worth the lower price as you get the same warranty as new.
There aren't any LED backlit IPS DVI LCDs on the market for less than Apple's though. Dell has some offerings with IPS panels around this size for a lot less, but they aren't LED backlit.