how high are you willing to go for a new Motherboard, price-wise?
I haven't looked at the newest stuff out there to get from Asus or Gigabyte, or for that matter, any of the motherboard manufacturers, but the Abit Nf7-s is a pretty nice motherboard if you are looking for Soundstorm audio and a lot of really nice features from an excellent mobo manufacturer.
it's a start anyway