First, both of these remotes look like very good offerings and it's good to see things ramping up in this space after such a void following Logitech's exit. As an outsider looking at potential options for additional rooms, here's a couple of quick notes from my perspective:
The Unfolded Circle remote as a product looks like a remote to me. It can be just a Universal Remote or you can tie it to something like Home Assistant to really open things up. Plus, it has a decent amount of buttons (20 w/17 customizable?) for what I consider a fair price (bundle at $500?).
The AVA remote looks like something bordering on a home automation product. Its reduced buttons and reliance on the screen gets pretty close to me holding my phone (13 buttons, 11 customizable?). But, the ability to do so much without Home Assistant is certainly appealing. However, at $1,300 dollars this is in an entirely different tier of product to me.
I believe Control4 is selling Halo Touch/Core Lite+ bundles for around $1,350. While you need to have someone add your equipment, if you buy the Home software you can pretty much do everything after that yourself. The Halo Touch has 27 buttons (23 customizable) and is likely the closest to a Harmony Elite in function (muscle memory will kick right in). Plus, should you choose to, you've basically built the foundation with one of the leading smart home vendors. This is actually an argument I used to make against Control4's remote bundles, but when AVA is kicking in at a similar price then the winds start to change.
I think the advantage that the AVA would have over a Control4 bundle is that it still can be small/simple and grow into more. But, that price is just something to get past (he types on a Kaleidescape forum).