It was very good about 5 years ago, and is still quite comfortable.
However I would say that today this has largely been superseded by a myriad of better choices. For the adventurous type there's e.g. Dactyl Manuform. If one does not care so much for the keywell there's Lily 58, Iris or Kyria. For built-in tenting there's ZSA Moonlander, Redox etc.
All of these have better customizability, repairability and portability than a Kinesis Advantage.
Want to try diffent key switches? Use hot-swap sockets.
Want wireless? Drop in a nice!nano microcontroller.
Want to create a crazy custom key layout or macros? You can do anything you want in QMK and flash it to the microcontrollers.
I own a Kinesis Advantage 2, a Lily, and a Corne, and tried a Dactyl Manuform. IMO the Kinesis still wins hands down. I’ve tried dozens of keyboards but the Kinesis is the one I will always go back to.
Why? To be blunt, I don’t care at all about fancy keyswitches, or wirelessness, or portability. I’m simply looking for the most comfortable input device possible.
If non-ergonomic rubber dome keyboards feel like plastic chairs, all of the other keyboards you mentioned feel like fancy wooden chairs. Some of them might be incredibly well-crafted and contour to your body! But the Kinesis feels like a top-of-the-line high-tech massage chair. I’ve tried dozens and dozens of ergonomic keyboards —- and even made one, by designing a PCB and printing it out —- but at the end of the day, the Kinesis is the keyboard I will ALWAYS reach for.
However I would say that today this has largely been superseded by a myriad of better choices. For the adventurous type there's e.g. Dactyl Manuform. If one does not care so much for the keywell there's Lily 58, Iris or Kyria. For built-in tenting there's ZSA Moonlander, Redox etc.
All of these have better customizability, repairability and portability than a Kinesis Advantage.
Want to try diffent key switches? Use hot-swap sockets.
Want wireless? Drop in a nice!nano microcontroller.
Want to create a crazy custom key layout or macros? You can do anything you want in QMK and flash it to the microcontrollers.