Asus - heard it was one of the best already - and referring to Gigabyte: they don't have any problems with the manufacturing process - none that i know of. Anandtech recently made a review of the board and said it was the best board they have of the KT400 chipset set - including the A7V8X which was so close behind.
The only thing is that A7V8X can be used to overclock, 7VAXP isn't designed for overclocking but you can do it eventually with the right softwares that came with the mobo.
I've heard reviews stating that the ASUS and Gigabyte are both the leading company in motherboards - for both markets too.
So we both got the best of both worlds.

TIGS