I went with the Zenwatch. It's thinner, and the way the band is mounted helps hide the thickness even more, making it look nice and thin instead of like an Oreo cookie strapped to your wrist. I looked at both, just didn't want the thickness of the Moto360. Plus, in my opinion, I think a square screen works so much better for what a smartwatch is for, a round screen just doesn't have the same real estate. Also, and this was a big one for me, the TI CPU in the Moto360 is many years old (same as the CPU in my old Moto X) and not as powerful or efficient as the Snapdragon 400. I know they both work fine, but I think the Zenwatch has more future because of the more modern CPU. Also, the more efficient CPU paired to a slightly bigger battery gives great battery life. Currently at 13% left, after coming off the charger at 6:30 AM, so about 19 hours on. Screen always on, all the normal use, some fitness tracking. Anyways, that's my opinion between the two watches, the same thing I was pondering in early December.