You can have the best equipment you are able to afford, but the room acoustics are the single biggest determinate of how your system will sound. So I try to match the system to the room (generally speaking), with the brightest-sounding going into the room with the most upholstered furniture and bric-a-brac scattered about. The majority of floors in my condo are laminate, so wall treatments are used, along with two large floor-standing absorption panels in one room. Ironically, my highest end system is located in the area where the acoustics are the worst (the dining-area/kitchen), because that is the area where my Vandersteen 3As work the best because of the square footage available (20' x 10'). The floor there is ceramic tile, but the uneven wall surfaces (cabinets) help ameliorate that large negative factor.
I am also a big believer in the heavier-is-better theory, because that is usually an indicator of a well-made product (the one exception to that rule in my inventory is a PS Audio HCA-2 amp, which sounds really good and only weighs 30 pounds). The synergy between components also matters more than the quality of any one piece.