Haven’t heard the S1500, but do own the XS30 and S3000i, as well as the SB13-Ultra. For music, it’s the Ultra, then the S3000i, then the XS30. For movies it’s the S3000i, XS30, then the Ultra. That is my impressions in my home, at the sound levels I play, with the music I like. YMMV.
Music area: Magnepan 3.6, McIntosh MC2205 amp & C48 preamp, SVS SB13-Ultra, Oppo BDP 95, dbx 3BX, and assorted equipment.
Movie area: EMP Tek E5Bi (were rebadged to R5Bi), RBH/EMP Tek R55Ti, PSA S3000i, Denon X2000, Oppo BDP 83.