Owning one of the best soundbars is the best way to upgrade your home cinema with very little headache, and there's zero competition. Although serious hi-fi nerds poo-poo soundbars, some people don't have the time, space, or patience to deal with AVRs, floorstanders, wall-mounted speakers, and the like. Sometimes a soundbar is all you want.
And boy, have I got the soundbar for you: the KEF XIO. The XIO is KEF's first foray into the home theater market, and it's a bullseye. Almost everything about this soundbar is excellent: the sound is seriously cinematic, it has powerful bass, and ridiculous Dolby Atmos. The main downside is the app, but if you're not the kind of person who uses soundbar apps, this will be a non-issue.