Taste it so it costs; This is a very expensive keyboard, but it is in a completely different league compared to other keyboards. For example, take the backlight on when you approach your hands, so it has a presence sensor! Or the feeling in the wheel depends on which application you are using. So, in a browser, it's clear "hack" in the wheel when it's flick-browsers, but when you're in Windows or Spotify, it's completely out of control and just smooth when it's performing volume control.
Second plus is:
Very nice, quiet, nice buttonfeeling solid built and good software for settings.
The only negative is the price, but once you've used the keyboard, you understand why it's much more expensive than other keyboards. :)