Can confirm - Keychron didn't even come up on my initial searches a few years ago for mechanical + wireless, and I ended up with a couple (work, home) of the Logitech G613.

These are good, solid devices, with a nice response - however both are starting to give me double characters on some keys. I'm wary about popping the tops on the keys, and so far some good thumps / blowing out around the affected keys has resolved the problems. However, reviews around the net suggest this is a problem that tends to get worse with this model.

The Keychron is now on my shortlist once these Logitechs are unusable.