I'm curious, is the Moonlander enough of an upgrade over the EZ to be worth dropping that sort of money on a second keyboard? What are the big differences you've actually noticed having made the jump?
I have both. I agree with the gripes about the thumb cluster acting as a pivot, it's not an optimal design but it's plenty comfortable for me.
The big reason I wanted to try it is the thumb layout is more ergonomic and conducive to chording. On the right thumb cluster I map the four keys to 15 bit encoded layer. I don't _use_ all that space, but I have over a thousand keypoints at my disposal.
But I do use the bottom 3 (plus base) quite heavily. It's more ergonomic to move frequent keys to near home rows in a higher space.
I don't have any experience with the Ergodox, and I loved the Moonlander when I first got it. But having used it for about 8 months now I really don't like how they've implemented the tenting -- the thumb cluster ends up too far away, making the inner most thumb keys on both sides unreachable (for me).
I'm likely going to replace it with something with better designed thumb clusters when I can (probably a Kyria or maybe a Corne variant).