I've found Logitech is often good to use for Linux.
I have a K400r that works great. I usually use it for my Steam Machine, which is running Peppermint 7. I'm presently using another Linux distribution and using it (to make sure it works) to type this message. It's almost the same thing as that K400 Plus you linked to. I filtered the results in the Amazon reviews for the K400 Plus to "Ubuntu" and there are a lot of people who are using it for Ubuntu.