I got the Kinesis Advantage2 last year. I got used to it, almost reaching my laptop typing speed. But I actually don't find it super comfortable.

To be honest, no keyboard matches the comfort of my macbook with the keyboard being under the level of the palms.

I also more recently got the keychron K3 (low profile) and realized that the thing I don't like in the KA2 is my wrists being locked.

I think it's not enough to consider a keyboard without a complete setup, including where the hands / arms will rest and where the mouse is positioned.

For example even the distance of my laptop stand makes a huge difference because it affects how far my keyboard can be from my torso, hence whether where my arms rest on the table.