i've tried both first revisions of these boards....the difference only is the HPT366 turned into the HPT370 which adds ATA100/RAID.
personally i prefer the Abit BE6-II for it's tweakability. more fsb's, more tweaks. soyo is good but i haven't really been impressed by it's bios and tweakability. the bios tweaking is the field in which abit excells. as for stability, my BE6-II is very stable...no problems.
try reading anand's 440BX mobo roundup...you might wanna consider the BXMaster. =)