Most "open" headset,comparable to Q3?

I'm a happy Quest 3 owner, but I'm also an advocate of open source and privacy. I sometimes wish my Q3 wasn't as tied in the the Meta "walled garden" thing, and was a little more "open". Think, being able to install things and use the headset without tying it to your personal identity, being able to tinker with the OS a bit more. Think VR in Linux.

Any headsets out there that sound like that, while still being fairly high quality?

Just wondering.