Note, the Kinesis Advantage is the one with "cups" that have keys in them in single keyboard.
The Kinesis Freestyle is split into two halves and unlike the Ergodex or similar it's just a standard keyboard layout which makes jumping back and forth between other computers less of a hassle.
I picked up a Kinesis Freestyle 2 last year, with the longer (20" I think) cable, and it's been wonderful. Standard QWERTY, and the cable is long enough that I'm in a comfortable typing position leaning fully back into my chair with my arms sitting on the armrests.
Only complaint is that the macro buttons off to the side just emit standard key presses (eg Cut sends Control+x), which I guess means I should look into the Freestyle Pro which _is_ programmable :)
As a buyer of both the original Freestyle Pro and the Edge (first edition, pre-rgb), I endorse this message. Either keyboard will likely take your pain away, but the Edge is the better option.
The Edge has everything that was missing from the Pro. It truly is the perfect keyboard, in my opinion: split, backlit, mech switches, fully (and easily) programmable, multiple layouts, internal memory, extra macro keys. What more could one ask from a keyboard...? The only shortcoming is that the keycap profile is custom, so it's hard to pimp if you are into color schemes, but that's it. I don't understand why they chose to market it to gamers, when it's the perfect hacker's tool, but I guess them kids are more willing to splash the cash these days.
After dropping coffee on it for the N-th time, I left it outside to dry. I didn't notice that the location I placed it had direct sunlight - plus, it was during the summer.
One of the spacebar keycaps warped to the point of being unusable. I tried several options (including attempting to 3d print a replacement). Was almost giving up, emailed support.
They sent a replacement keycap, for free. For the Freestyle Edge - the one with the blue backlight, that's discontinued.
I'd say the major drawback that it has is the "gaming" name, which makes it awkward to get your company to expense :)
I'll add another drawback: the switches are not removable either. So if you wanted to replace your switches with different ones (for instance, WASD), you really can't (practically).
The Kinesis Freestyle is split into two halves and unlike the Ergodex or similar it's just a standard keyboard layout which makes jumping back and forth between other computers less of a hassle.