The G5S may be official, but the Moto G5 Plus got a price cut that makes them worth another look. The G5 Plus offers a 5.2" 1080p screen, Snapdragon 625 chipset with a 3,000mAh battery and a 13MP/2160p main camera. Compared to the G5S Plus, you get the same chipset and battery, but a smaller screen (vs. 5.5") and you miss out on the dual camera.
Note that the B&H deal ends today (at 3 AM ET).
Amazon has both options for the exact same price as B&H and the ad supported version is still cheaper, despite the article on B&H stating otherwise.
Hmm, some would consider f/1.7 dual-pixel camera of the G5 Plus to be superior to that of the dual camera in the G5S Plus.