1. Listen with your own ears using a music piece you are famniliar with.
2. Take into consideration the acoustical environment and the associated equipment they are demoing.
3. What is your front end consist of: Receiver or Amp/Pre-Amp combo, CD, DVD, Vinyl...etc.
4. What type of room are you planning on placing the system in, size, width, height, depth, carpet, hardwood, drywall, plaster????
5. What types of music do you listen to and is system also used for home theater?
6. It always amazes me how many bullshit opinions are everywhere - Trust your ears and yourself.