your suggestion would not ensure "the best" 50 stereo systems, only any 50 stereo systems.
you asked a question, i'll give you my ideas.
first, try to describe what would constitue the best sound for you, regardless of cost. after you have ascertained in your mind your desired goal, listen. go to as many dealers as possible. go to a show. visit friends. you probably won't hear anything that meets all of your standards. you may find one stereo system that comes close. try to understand what it is about that stereo system you like and analyze the components in that system.
perhaps, the system is out of your price range, and yes there is the matter of the room. nothing is perfect.
maybe you would select a component or two from such a system--hopefully the speakers and then figure out what to do from there.
you have resources. you can speak to dealers, serious hobbyists and manufacturers and then evaluate the suggestions.
after you make your purchase you still may not be satisfied.
the point is to learn as much as you can by exposing yourself to as many systems as possible.
unfortunately your idea is not realistsic.
you may get lucky and find a dealer who will allow you to listen to a stereo system and then change one or more components until you finally reach a point where you like the sound. if you spend a lot of time with that dealer, you probably will be obligated to buy something.
good luck.
you asked a question, i'll give you my ideas.
first, try to describe what would constitue the best sound for you, regardless of cost. after you have ascertained in your mind your desired goal, listen. go to as many dealers as possible. go to a show. visit friends. you probably won't hear anything that meets all of your standards. you may find one stereo system that comes close. try to understand what it is about that stereo system you like and analyze the components in that system.
perhaps, the system is out of your price range, and yes there is the matter of the room. nothing is perfect.
maybe you would select a component or two from such a system--hopefully the speakers and then figure out what to do from there.
you have resources. you can speak to dealers, serious hobbyists and manufacturers and then evaluate the suggestions.
after you make your purchase you still may not be satisfied.
the point is to learn as much as you can by exposing yourself to as many systems as possible.
unfortunately your idea is not realistsic.
you may get lucky and find a dealer who will allow you to listen to a stereo system and then change one or more components until you finally reach a point where you like the sound. if you spend a lot of time with that dealer, you probably will be obligated to buy something.
good luck.

