As I said, I am a programmer, I work with the keyboard, if not for days on end, then about that. For 6 years, there was not a single problem with this keyboard. Hands never got tired, fingers too. I type blindly, so the main requirement is the correct layout, and how the characters on the keys survive there is not even a question in the top ten. Dedicated volume buttons are a nice bonus. In general, if you do not need backlighting or if you are looking for an inexpensive keyboard as a gift for a programmer who does not need perversions, you can safely take it.