i did not explain myself correctly.
my Z87 G43 Gaming has no headphone port in the back, only in the front through the front panel header on the mobo. i like to have both speakers and headphones plugged in at the same time. the mobo header is louder then the back i/o, by about 20% - it's noticeable.
while this is not a problem per se, it should not exist; both i/o should work exactly the same. and i should really get a hph plug in the back i/o.
the Sound Blaster Cinema feature is, afaik, a software addon, so nothing to do with the mobo itself.
as for the NIC, it would not get recognized by the W7 base install, which left me w/o ethernet. then i found that the drivers are horrible bloatware, unless you get some hacked, non-MSQL drivers which you have to dig through the MSI forum for.
i don't like the UEFI BIOS at all, i can't figure out what half of the options are, and the navigation in unintuitive. really, super unintuitive and confusing, even today i have no idea why the screen changes color if i click on a specific panel.
it hardly OC my 4670k, and eat voltage like there is no tomorrow. ok so that might be CPU-specific, however, it is a delidded + coollab pro cpu.
yes it works. yes, i can boot into the system and my computer runs fine.
but i prefer the Z97 + 4790k i have on the OSX system; i can recognize everything in the bios immediately, it OCs like a beauty, it has the same ALC 1150, but it sounds fuller. more bass yet well defined. not by a huge amount, but enough that my Z87 sounds thin, and the Z97 sounds "just right". No KillerNIC to deal with; i would haphzard to say, it even takes a couple seconds less to boot up. and the internal SATA ports are placed in a reasonable way.
it has the same stupid thing where the hph need to go in the front; i didn't notice any sound difference between headers.
different systems, different chipset, diff cpu .. i know, but one feels better than the other.