I just redid my neighbors setup went form some old school klipsch bella speakers to polk LSi25's with built in powered 10 inch subs and in a room that is 21 by 21 by 17 with openings all around it rocks the room and most of the house.
Also have samsung blu ray player, Onkyo 3 room receiver, pioneer 300 dvd changer, apple tv for all the music, and 2 directv boxes one for tall the rooms and one for that tv.