ASUS warranty stinks on refurbs just as a heads up. I have one, the AC adapter came broken and they wanted me to RMA the whole unit back to them. I fortunately made my way to Customer Care at the 510 number and was able the rectify the problem. The 800 for ASUS is a joke if you buy refurb.
With the new one you'll get 1 year accidental and 2 year general warranty. Where as with refurb you'll get 90days. Newegg sells the refurb for $919 right now, but seven days ago it was $909. Worse still, Newegg sold the refurbs for $870 from Oct-Dec 2010. Makes no sense, older product but the price goes up, figure that out. If you do go refurb try to get the $870 deal from Newegg. (Newegg version has faster hard drive than bestbuy version)
Not 100% sure, but the new version comes with backup discs I think too.
In the end though, if it wasn't for the broken AC adapter, my refurb came in new condition.