The Gigabyte Z87mx UD3 would be a bit better and it has a bit more features (SLI, for example), but if you're not going to SLI or overclock much you might as well go with the Asus one; You'll never notice the difference.
If they are, there's really not much of a difference. The Micro ATX one will not be as good for overclocking since it's smaller so it might have some heat issues, but the difference is insignificant.
yes yes ! these are the ones ! THX for the advice btw which one would be better for MATX ? ASUS z87m plus or Gigabyte Z87mx UD3 ? because I've found Asus one being cheaper
The Gigabyte Z87mx UD3 would be a bit better and it has a bit more features (SLI, for example), but if you're not going to SLI or overclock much you might as well go with the Asus one; You'll never notice the difference.