According to my criteria, this is the best keyboard I've ever used. And there were quite a few of them. Every day at work, I put in a lot of typing time. The keyboards were tested. in general, a great deal of material that is distinct. And there was always something that did not feel quite right, and I was always looking for ways to better something. Nothing to grumble about at this location. Although I can see the illumination from underneath the keys when I look at the keyboard at an angle, apparently the brightness irritates some people. It does not bother me in the least.