I bought this keyboard for my dad got diagnosed with carpal tunnel. He raved about it so much, I went back and bought one for myself as well. It is the most comfortable keyboard I have ever used! I use the computer a lot because I am an online college student and this keyboard makes it easier to get assignments typed out without my hands hurting afterwards. It also has some extra neat features like 5 programmable hot keys, a numeric keypad, zoom slider in the middle, and dual function keys. The zoom slider in the middle is awesome because it makes it very easy to zoom in or out on images or text. That has come in very handy when studying documents online for tests! All the function keys work great with Microsoft office products which makes my life easier because I am required to turn in all assignments using Microsoft word. Performance It works beautifully. I have not had any of the keys stick or not function the way they are supposed to. Durability It has held up to many hours of being used because someone is always on the computer. Design I love the ergonomic design! Anyone who uses a computer a lot needs this feature not just for comfort, but also because it helps to prevent carpal tunnel syndrome. Comfort This is a very comfortable keyboard to use.