For me the best is my current Foxconn P35A. Yes, it's scandalous but a great overclocker! 2nd place is Abit AN7, still running an Athlon XP 2500+ Barton. Worst is probably the MSI KT3 Ultra2 that was a cranky ol' crooner. My first Epox mobo with Athlon 1333 was pretty weak, too.