I bought two pieces - to the house and to the office, because after this keyboard I could no longer work with an ordinary cheap one. The option is not mobile, since the clave is quite heavy. But in the office or at home - what you need. Has pros: Quiet, soft, heavy and reliable (Boris did not lie). Tactile and visually pleasing materials, excellent assembly. Without backlight works for months. With backlight (I almost never use it) - much less. Convenient switching between 3 devices. Mac / Win layout (when I used a macbook and a desktop on windows at the same time, I appreciated it. The function button is in its place, and not stuck between alt and win. There is a Caps Lock indication Cons: Sometimes clicks slip, as the move is quite large. The backlight is not the best - not only the symbol but also around the button glows. I really want an analogue cheaper and without backlight! The price bites, although it's worth the money. Short left shift to please useless button with []