I heard them a/b'd against the Large Advents I was auditioning back in the late 70's. yes, the Bose sounded you more with music at high volumes. But on normal listening levels the Original Large Advents sound a lot better.
Now some clarification to the surrounding with music. It did so because of the room reflections so it wasn't an accurate sound stage. it was more akin to Quadraphonic sound with sound bouncing around. but instead of 4 speakers it would do so with 2.