The K8N-E Deluxe is a Socket 754 board running the Nvidia nForce 3 250Gb chipset. It brings a beefy feature set (SATA, Firewire, Hardware Firewall, GbE, the list goes on), along with good performance. All ASUS need to do is tweak the BIOS a bit and they have themselves a great overclocking board too. Check out the review over at Hexus.net.
Review snippet: It's the features that drive this mainboard more than anything. The use of the 250Gb nForce3 variant, bringing with it GigE and those highly useful hardware firewall features for the home user, combined with plenty of USB2.0, FireWire400 and six SATA ports, means that ASUS push almost all the right buttons. Eight channel audio rounds things off.