Hexus has reviewed Shuttle's AS45GTR motherboard (based on the SiS648 chipset) :
My main concern in recommending the Shuttle AS45GTR has nothing much to do with the motherboard itself. It has more to do with availability. After checking the usual on-line suspects, I found it difficult to find it in stock, or other Shuttle 'boards for that matter.
What I can say is that I found it something of an eye-opener. If you're looking for a feature-rich Pentium 4 motherboard, and want to be a little different from the norm, the AS45GTR should be worthy of your attention, especially if you're not looking to heavily 'clock your system. With regards to price, I expect it to retail for £100 or so.