I would echo
both these posts. I began building (not counting re-vamping KayPro Z-80 boards) in the late eighties, have
never gotten a DOA MOBO; and, after fairly extensive research, decided GB was IMHO the best manufacturer to stick with...
That does not discount the
possibility of getting a bad board; most QC these days, for these sorts of products, is statistical - i.e., they've decided to accept the possibility of some finite, very small number of defectives 'escaping', to minimize the expense of testing, and provide us with a
cheaper (well - let's say 'less expensive'

) product. Then, there is also, for
all electronics, the problem of 'infant mortality' - if it
stays working for two months, it'll likely
keep working well into technological obsolescence;
but, getting
through that two months, in a build with, say, thirty components, can possibly be hell!
The only major flaw I found in the initial assay was (and this appears to be endemic to
all MOBO manufacturers) spotty, sometimes plainly incoherent tech-support - and this problem is
vastly reduced by the folks
here,
and at TweakTown: if you've got a problem, you usually can get it fixed/figured out one place or the other...