1) Vandersteen 2Ci in a semi-treated living room mostly for solo mid-high SPL listening, all kinds of music.
2) Martin Logan Aerius i in the large family room, set well far apart and guests love the room filling crisp sound.
3) DIY back-loaded horn w/Fostex FF165K in a smaller acoustically treated upstairs room used in an analog-only system. e.g., turntable, reel2reel, cassette player, for casual late night low volume listening.
Systems 1 and 2 have separate preamp/amp but can share the same source(s) so we can play the same music downstairs in both rooms when we have lots of guests.