It's true that the Teron board is somewhat of a clunky design. The 32bit 66 MHz pci slot is mostly useless seing there's not a lot of those cards around and if you can find one it's more expensive. AMR slot too. Basically useless unless you buy the card from ole-egil. No onboard sound on the 600 version is kinda lame too.
What Eyetech should do is buy chips from Mai then go to a company like ECS to design them a board. Seing that all boards these days are basically the same the price difference really shouldn't be that big. Or call Dave Haynie.

It looks as though you can overclock it at least. Can you do that with the pegasos?