Way over-budget for your taste I guess but I still wanted to make a note here for representation sake. Look into the brand Zidoo. I have Zidoo Z9X 8K, it’s the best client I could dream of! ~250$

Cons:

• Android based (outdated AF but still)
• Maybe not so secure (http server always on while the device is on, atm)

Pros:

• Very good support of Dolby Vision, 4K (8K maybe?)
• Very pretty, both hardware and software very polished IMO
• The remote is glorious, tactile with backlight
• Lots of other cool things
• Very snappy Android experience
• it just works™
• The audio downmixing works great, compared to the Google TV which was very bad
• First party Jellyfin support among others

And much better gaming specs such as VRR, near complete HDR capabilities, … Multi monitors are better supported, more customization (albeit it’s harder to configure and get to the point you want sometimes).

It’s not just color variants of the main interface 😇

I’m thinking about switching as well for those reasons but I’m disappointed on the NixOS support of KDE. Gnome is configurable through dconf at least for a kinda NixOS way.