personally i would wait a few weeks till the boards with the new southbrige (the b2 version has the usb bug fixed)
but the tyan tiger mpx is a great board, i also like the asus a7m266-d
if you want some overclocking features you need to look at the MSI board (cant remember the model number)
also iwill and abit both have dual athlon boards about to be released, from what i understand both will have overclocking features