Have you seen Linus's video on the LG 34UM95 34" Ultra Widescreen 21:9 Monitor? He seems pretty sold on this, but I don't have the resources to test it out like you might. It's just a personal suggestion since you won't have to mess with any scaling like with 4K. Personally, I would still just rather have 4 1080p monitors on a stand like Wendell's haha.