Thankfully Belkin has announced
another HKSV doorbell, so at least there's another option other than Logitech. It's a bit pricey for the features offered, but welcome to Homekit I guess.
I recently tried the Logitech Circle View doorbell, but it's going back. Unfortunately, this doorbell doesn't allow for a 2nd doorbell button due to its unique wiring diagram (used for my rear door). This is a dealbreaker for me. My Ring Pro has no problem with this setup. From the Q&A from Belkin, looks like it shouldn't be a problem with this doorbell either.
Also, like others noted, the logitech runs super hot. Not a problem for me now (it's -10C), but I could see it being a problem on a hot summer day.