Best Keyboards for Emacs
Here's what i consider the best keyboards for emacs.
Kinesis Freestyle Edge
Driverless programable.
X-Bows
Compact, easy to adopt. Features large and many thumb keys. Programable. Not expensive.
Koolertron
This one got the most number of keys. you got about 30 extra keys. You can program them to be one-key-press shortcuts.
Kinesis Advantage2 Keyboard

This is my main keyboard since 2016.
For full review, see Kinesis Advantage2 Keyboard Review
My config. Kinesis/Ergodox Layout for Xah Fly Keys
Efficient Keybinding for Emacs
Also, very important is to get a efficient keybinding for emacs.