Need help choosing MB PIII

[LYRA]

I have a little (luxury?) problem choosing between 2 motherboards I allready have laying around....
I am going to try overclocking a Celeron 800 (on a slotket) as much as possible and want a stable result.

The two boards i question are:
Abit BE6 II ver. 1.2, and MSI 6163 Ver.2

I think both boards are decent boards, but i want to pick the best/ most stable board for my #2 PC

Thanks in advance......
P.....