A real ergonomic keyboard. I had a bad pain in my wrist and knuckles, and all are gone now. Definitely a good investment for my health.No software required.Fully programmable in hardware level.Remap any key is possible.Switch between Mac/PC/Dvorak/Qwerty layouts.Define/customize a new layout easily.Wrist pad is awesome.Very light weight.It took two weeks for me to learn how to type with same speed again on this new layout and now I'm even slightly faster than before (Avg: 90wpm) especially with keyboard shortcuts (thanks to thumb cluster keys)If you are not a touch typist (10 fingers), it might take longer because you must learn. First hours are very hard even for a pro typist.

I have been using mine for about 4 months now and love it. I know it is expensive, but I, like most of you, sit at a computer and type for 6-10 hours a day. I think this pays dividends. When I have to type at another computer, I now immediately notice how cramped and twisted my hands and arms have to be to fit standard keyboards. I wish there was an extended version that had a built in 10 key (I am in accounting and enter a lot of numbers) but am getting used to a separate add on. The default layout was not satisfying. I swapped the arrow keys to be in the conventional inverted t pattern and moved my punctuation to the right to make room. I ended up shifting the [ and ] keys to the left hand. If arrow keys being clustered was not so important to me, I could have ... MoreI have been using mine for about 4 months now and love it. I know it is expensive, but I, like most of you, sit at a computer and type for 6-10 hours a day. I think this pays dividends. When I have to type at another computer, I now immediately notice how cramped and twisted my hands and arms have to be to fit standard keyboards. I wish there was an extended version that had a built in 10 key (I am in accounting and enter a lot of numbers) but am getting used to a separate add on. The default layout was not satisfying. I swapped the arrow keys to be in the conventional inverted t pattern and moved my punctuation to the right to make room. I ended up shifting the [ and ] keys to the left hand. If arrow keys being clustered was not so important to me, I could have used the default. Making the changes was very easy. 5 eggs, highly satisfied, only test left is to see if it is still working in another 5 years.

I've been hooked on the Kinesis Advantage keyboards for a very, very long time. They are strange looking, but if you take the time to acclimate to the differences, it really is easier to type with these things -- the concave "keywells" mean you don't have to move your fingers far to go from key to key, and the "thumb clusters" mean that your thumbs can do actual work while typing, rather than just sitting idly on the spacebar. These advantages also become relevant when gaming, if you are into that sort of thing. Completely configurable, you can customize the keys for use with Windows, MacOS, Linux, or really any device that can support a USB keyboard. Or customize the entire keyboard for individual applications, if you want. These keyboards are very expensive, no ... MoreI've been hooked on the Kinesis Advantage keyboards for a very, very long time. They are strange looking, but if you take the time to acclimate to the differences, it really is easier to type with these things -- the concave "keywells" mean you don't have to move your fingers far to go from key to key, and the "thumb clusters" mean that your thumbs can do actual work while typing, rather than just sitting idly on the spacebar. These advantages also become relevant when gaming, if you are into that sort of thing. Completely configurable, you can customize the keys for use with Windows, MacOS, Linux, or really any device that can support a USB keyboard. Or customize the entire keyboard for individual applications, if you want. These keyboards are very expensive, no doubt about that. However, take into consideration that they use the Cherry MX Brown mechanical key switches; not only are the keys comfortable to use, they are amazingly durable. I just purchased a new Advantage keyboard this week (I added a photo of it to this review) to replace one that has finally started to act strangely on occasion (although that one still types just fine most of the time). I can't even remember when I bought the older one, but it has the date "2002" stamped on the bottom. I know it was one of the first USB keyboards I ever owned, and that I've used the heck out of it. Given that I am writing this in 2021, I can state with certainty that these keyboards can last you a very, very long time!