K7S5A
I have no problems, and I believe the newer revisions cleaned up any bugs that originally affected the SiS735 & K7S5A.
Edit: The K7S5A even supports AMD Thoroughbred core chips, with a BIOS update, so it is able to support all the K7 chips (nice if your friend plans to upgrade sometime)
also, i have this board. no problems very stable.