Kind of like @emergingsoul, I can only compare one speaker to another. So I find it best to rule out as many variables as I can. So comparing speakers using different recordings is a non starter. I use a recording I know well, and have heard on many systems. One example is on Hope by Hugh Masekela, Stimela.
The best sound I heard with this song was on a system at a dealership with Wilson Shasha speakers and Bel Canto Ref 600 Mono block amps I think. I heard a very dynamic sound that sounded very obviously like the live concert that it was. I've heard that song on many other systems with different speakers, but of course the other equipment was also different. And I only hope it's the same mastering. Plus different rooms, and on and on it goes. But I do my best.
BTW I listen to all kinds of music and recordings in regular sessions.