I like a certain level of quality when it comes to audio.
When I’m making music, I use in ear monitors from shure with a flat response because it would throw off my mixes otherwise. Same with my presonus speakers. Flat response.
But for causally watching content, its fine for me to use some bookshelf speakers or even a bluetooth speaker. Its not super important for watching content for me as long as its not total trash.
Older thinkpads would come to mind, usually a good option. Generally affordable, repairable, and can be good for Linux.