Apple Watch vs. Garmin: which one should you get?

When you're surrounded by smartwatch early-adopters and you opt to wear a Garmin multi-sport watch as your daily driver, you inevitably hear "What is that?" at least a couple times.
At least, that's been my experience with the Garmin Forerunner 735XT, which I've been wearing for at least a few weeks. It's an expensive but useful multi-sport watch that tracks your hiking, running, and cycling adventures, as well as your daily steps and sleep levels. It has built-in GPS and Glonass, and it's