Go with the Soyo over the ASUS. I will as soon as the DRAGON ULTRA with SIS645 chipset is released for the P4 socket 478. By the way,Soyo switched to HiPoint for raid with the ULTRA (better cause you can run them like additional IDE channels). I have talked to two people who own them and they have nothing but praise for them. If I was to buy a high performance KT266A today, it would be the Soyo, and the only ones that would compete is the ABIT or EPOX, maybe the GIGABYTE.
If you aren't looking for high performance, I picked up a Gigabyte GA-7DX(AMD761 w/Via south) at Newegg.com for $45 refurbished (they are tested 0, unlike new cards). Didn't have anything but the board, however the manual and all drivers were available at their site. Couple that with my $38 Duron750 and Crucial memory DDR2100, $33 at the time, and I gots lotsa go for no mo, HEH. I hereby patent that saying: lotsa go for no mo. Yeah, I am nutz.
CRAZY LIKE AN IDIOT.
Anyway, for Athlon and high performance, the Soyo is the best I have had evidence for.
Good Luck, Take-Out
"We killed OUR Hitler" - attributed to Paul McCartney (If so, then well done, sir)