This keyboard easily meets all my needs. It has many useful freatures. As some reviewers have stated, the space bar can be a little loud but is not sticky at all. I do wish this keybaord came in the standard grey that the older models came in. Other than that, I'm very happy with my purchase.

This is the most comfortable keyboard I have found yet! I do a lot of typing between gaming and home projects and I have found with this keyboard my wrists don't hurt like with others I have tried. You should definitely give this one a try!

This was a replacement for my last Microsoft Natural Ergonomic 4000 Keyboard, because the old keyboard I had was getting full of crumbs and the letters were worn off a number of keys.

A great keyboard to use, buy it fails totally at the first split of water on the keys. The MS Comfort Curve 2000 is less than half the price and "Split-Proof". For such an expensive keyboard, would it be too much to make is split proof???

As a writer, having a keyboard like this is really a big help. It is desinged to make me feel comfortable during long hours of work. Glad manufacturers have thought of making something like this.

A prompt delivery disappointed with no software installation diskette nor any instructions whatsoever included in the package. A manual written for Windows 8.1 is downloadable on line, but I did not find it very intuitive.

Awesome to write. It really feels good! The learning curve seems nothing in comparison to how it reduces the pain. HOWEVER: The keyboard is TOO LARGE, and it pushes the mouse too far away from the ideal position if you center it in front of your body.

I bought this as a replacement for my old Microsoft ergonomic keyboard. It really is the most comfortable keyboard to use, your hands sit in a much more natural position, thereby reducing the chance of RSI.

You can find much cheaper ergonomic boards than the 4000 but none with the same great design or interesting additions. It looks nice, and – most importantly - is extremely comfortable to use. Well worth shelling out for.