You are introducing the variable of room setup. But generally speaking the owners of the more expensive speakers do have the resources to put into great setup. And given that, generally speaking the more expensive speakers will sound better and be more musically involving.
Of course I am, because the room is part of it, as is the position of the loudspeakers in that room as well as the listening position.
Again, the more expensive loudspeakers are not a guarantee that they will "sound better and be more musically involving". It simply doesn't work that way.
The entire system upstream has to jell together and the amplifier(s) have to be happy dealing with whatever the load is the loudspeakers present to them. It's not just a matter of throwing top dollar gear at top dollar speakers and getting top dollar sound.
Bruce, my first three speakers were Maggies and I am still a big fan of the brand. However, Magnepans can’t match the bass or musical involvement that’s possible with a pair of XVXs.
You know, there's these things called "subwoofers". With two or more subwoofers set up properly in a room and dialed in with a pair of Magnepan's, you're more than likely to get much better bass performance and accuracy than just a pair of XVX's.
Why?... Simple... The XVX's and/or Magnepan's are or should be placed in the room for best possible mid-bass and midrange clarity, sound staging and imaging. When the XVX's are placed in those proper locations, they will not be in the best locations for proper bass reproduction, plain and simple.
And please don't reply back saying that XVX's don't need subwoofers, because they do as ALL loudspeakers do. Remember, subwoofers aren't just for "adding" bass or extending bass output of loudspeakers. Their main roll is flattening out the bass response in the room at the listening position. In other words, subwoofers are for "tuning" the room, hence why two or more subwoofers are desired.