I'm not a big reviewer, and should probably do better, so I thought I'd review this Logitech Ergo K860 keyboard. I type a lot almost every day and all day. I have been for over 20 years and haven't been as careful with hand position, etc. I'd noticed my wrists starting to hurt by the afternoon, especially my right wrist (mostly when using the mouse). I'd been using another Logitech keyboard which had an arch in it, and think that helped some, but I knew I'd better do something about the mouse, and decided to give an ergonomic keyboard a try.
First, the quietness is outstanding. If I'm in an online meeting (as I am very often) and forget to mute, no one knows I'm typing. I like the distance of the strokes, which is a bit shorter than usual. I found it comfortable, and after a little over two weeks, I'm as fast as before, if not faster. It does take a little time to get used to, but by the end of the first day, I was fairly comfortable with it. The only issue is with my right hand. I haven't quite mastered dropping it on the correct keys without a quick glance yet. But once I'm there, I have no problem.
It includes the Logitech dongle, but paired right up to the one already in the PC from the previous Logitech Keyboard.
As a side note, I decided I liked the idea of a "vertical mouse," but did not go with the Logitech one due to cost, since that's the one I worried the most about not liking. I got a Delux mouse, and have been pleased with it, but I'll review that on that product page.