If Best Buy was switching speakers through a patch panel, I'd consider the audition to be an entertainment, nothing more. Better would be moving each pair to the same locations, hooking them to the same equipment, and playing the same music. That's still not ideal, as some speakers sound different with different placement, with different amps, etc.
The optimum method for you would be to purchase multiple pairs and try them at your home. Then you can see how they sound with the gear you have, and in your room setup.