Recommended motherboard + cpu combination for AMD Socket AM2+ / Phenom?

[Torfinn Ingolfsen]

Hello!

I'm thinking about building a new machine before the end of the year. A
quad core machine would be nice. I'm looking at AMD Socket AM2+ and
Phenom.
For running FreeBSD / amd64, are there any combinations of
motherboard and cpu which work better than others?
Or can I just buy whatever I find that is cheapest?
-- 
Regards,
Torfinn Ingolfsen