You missed the original contoured keyboard, Maltron: http://www.maltron.com/store/p20/Maltron_L90_dual_hand_fully_ergonomic_(3D)_keyboard_-_US_English.html

I have/had a Dactyl, Advantage2, and Advantage360, but the Glove80 is definitely my favorite!

The Advantage360 does not really improve over the Advantage2, in some respects it’s a step forward (variable split/tenting), in other respects it’s a step back (tiring switches, Bluetooth connectivity issues), and in many respects it’s stuck in a 30 year old design (same key wells, same thumb cluster where I can only reach 2 keys per thumb without weird stretches or moving my hand).

The Glove80 is really a step forward in many aspects — better key wells, better thumb cluster, better portability, etc. It’s a contoured keyboard that takes all the lessons of the Kinesis Advantage and improves over it.

Great to see this on RTINGS! I don’t agree with their assessment of the build quality though. The Glove80 is very light, which may give an impression of subpar materials, etc. But I was surprised how sturdy and nicely built it is. Also, looking at the competition, at least it’s not a (literal) echo chamber like the Kinesis Advantage2 and even though the 360 Pro might look more robust, it quickly gets scratches from the original palm pads.

Contoured boards are great. Once I had my first Kinesis Advantage, there was no way back to flat keyboards.