Gigabyte isn't my first choice normally, and I did a lot of research before deciding on that board (I had plenty of time to do so while saving up for this monstrosity of a machine, haha). It had very good user reviews for such a new chipset, so I decided to switch from my aging ASUS one. Thus far, I am not displeased. Performance is great, and I'm loving the latest-gen Thunderbolt 3/USB 3.1 Type C connectors. Plus, the audio chipset on the board has an integrated led strip that pulses with my music/sound effects. How can one
not enjoy that?
On a more serious note, macOS is my primary OS, and that board/chipset was the best choice for running a machine with this level of raw power on my budget. Given that I can outperform any Mac (or any other brand for that matter) under $3,500 on a machine I built for $1,100, I'm satisfied with it, even if it is a Gigabyte board.
As for the 10xx-series, they aren't yet compatible with macOS, which I prefer to Windows (unless I'm in the mood to game, naturally), and thus I have to stick with the newest one that will still load accelerated graphics.
EDIT: Added a bit more detail