I would go not by what you hear in a shop (as this can be so deceptive unless you have the ears of the cat and can intellectually compensate for the ambience room size and shop furniture_. I would go by reputation.
Adams and Mackie (some of their range) are good places to start. If you are in UK try Digital Village. Dont go HiFo or High Street, although Phil Spector did listen to his final mixes on care stereos as this was their final destination.
Stay away from the cans where you can.
Zero