<< Get a KT266A instead of KT333 if you're going to go the VIA route. >>
Actually, the biggest reason to get a KT333 seems to be that it supports a 5/1 PCI divider that should allow the PCI bus to run in spec at 166 Mhz for overclocking. Running at that speed on the KT266a with a 4/1 divider makes me pretty nervous about the long term health of my hard drives and other components.
According to posts at tbreak and ocworkbench.com in their reviews and comments of both the Asus and MSI KT333 boards, their appears to be a 5/1 divider. While not as nice as locking the PCI bus to 33 Mhz the way the Nforce boards seem to support, this would appear to be pretty darn good.
Add to the fact that no KT266a board seems to use the on-die thermal diode the XP's support, and that at least 2 KT333 boards do, this also seems to be a good reason to wait for the KT333 series to ship.
Personally, I am waiting to hear how the new Abit KT333 board shapes up. If it has the OC capability of the KR7A and has a 5/1 divider, and also uses the thermal diode the way the A7V333 does, that will be a sweet board. And when the .13 T-bred come out, with any luck, it'll OC as well as the Northwoods, and so that new divider will come in very handy. I just wish it supported a 6/1 divider for that!