Have you ever tried to head into a place like Best Buy to find a pair of speakers for either your car, house, or room? You head down an aisle that is hooked up to different radio stations to demo what they actually might sound like. The problem here is that a big empty building is nothing like your car, your house, or your home. What makes it worse is that the guy next to you wants to bump his favorite radio station, and there is no real way you can ask him to turn it down because you are nobody – just another person inside the store.
One thing you can actually do is buy two sets of speakers and compare them directly. This might be out of character, but sometimes you actually have to buy something and return it in order to actually know if you like it or not. Modern receivers and even DJ mixers have options for multiple outputs, so you can simply switch audio from one side to another if needed. Regardless of how tactless you might think this is, at least you won’t be stuck at home with a set of speakers that you never liked in the first place.
http://www.audioholics.com/frequent-questions/a-b-speaker-selector-comparisons