I think it depends on who I'm building the machine for ....
ussually I use a Asus or ECS mainboard .. they are the most trouble free ive found , for the lesser machines have had decent luck with amptrons also .. But most of the pc's i build are for pc illiterates... (1st question i ussually ask is ... how to you get to a pc's bios /or the bios in your pc ? ) that ansers alot about who im building the pc for ....
now for those of you that have built Screaming pc's ..
the old asus , abits, Iwills, soyo's, ect how many have had a perfect smooth trouble free pc ??? come on now ....
how many have flashed the bios wrong or had it crash repeatedly after tweeking it ??? come on .... tell the truth now ...
I myself have several wrecked cpu's, a few bios chips,and a few other messed up experimental pc's ...Im guilty thats forshure .
I'll stick with the stuff i know works for handing over to other users ... and keep my experiment pile /closet to myself .. (less phone calls that way )
I dont care if its Amd or pent ... its all in the $$$ at hand