Well, I built a system for a friend a short time back with an XP1600 on an Abit
KG7-RAID, it uses the AMD 760 northbridge mated with the VIA 686B southbridge and it's very stable

quick too

:
If you want a totally VIA option, look at the
KR7A-RAID.
Both boards are DDR w/ 266Mhz FSB, and NO onboard BS (sound, vid, LAN, etc). They are also wonderful for overclocking and tweaking, since they both have Softmenu III and are TOTALLY jumperless
BTW - On most Abit boards, the RAID connectors are
orange or
blue or
yellow, while the onchip IDE connectors are usually black or white.