Been looking at one of these for a while and the price has finally dropped!
This is the diskless version but is still a stonking deal. The 2Tb equipped version is £100 more from Dabs but according to a review on eBuyer this will support 4Tb in RAID 0 i.e. 2x2Tb discs which makes it better than the 2Tb version, even though the manual states otherwise (this is with official firmware so no homebrew implementation). 2Tb discs are about £50-60 right now (Dabs have them on offer at the moment via Quidco too!).
Saw one of these sell on eBay for £180 delivered earlier this week.
Product details here: http://www.lg.com/uk/it-products/network-storage/LG-network-storage-N2B1.jsp.