skyscraper,
I will echo others. Bring with you what you will be listening to once you take speakers home. If it is Sheffield drums, so be it. Otherwise, you seem to have quite a large collection so pick your favorites and just go with them. Who cares if speakers can pull all the obscure Japanese percussionists just right when you really like Hotel California and Barry Manilow? I will second the opinion about Steely Dan, especially on SACD. They are a nice challenge for the system. I use it to feel good about how it sounds but, I admit, it is not what I ever listen to otherwise. Nothing wrong with the music, just not my favorites.
It is probably anathema to mention Barry Manilow on an audiophile forum and he was just an example, nothing personal I promise. On the other hand, someone has bought all those records he put out.