2 HomePods are amazing!
1 HomePod is great. 2 HomePods are earth-shattering. Each HomePod contains multiple speakers so they are each independently in stereo. You get stereo from both sides (and no matter where you move in the room). But here’s the kicker: the left and right sides still get what the artist intended to send to the left and right channels separately. So we still get the artist’s true recording with left/right separation while simultaneously getting stereo sound from both sides (all around you). This technology is astounding.
Apple should never have released the HomePod before AirPlay2 and the ability to pair. Except because I bought 1 HomePod at first, and thought that sounded great, I now know how phenomenal a jump it is from 1 HomePod to 2. If you have disposable income, get 2 HomePods now!