I recently purchased a new receiver and need a set of speakers to go with it. The receiver is the Pioneer 1020-k. I would like to buy a set of 4 speakers with a sub. I don't mind getting them piecemeal, but I would prefer to get all at once. I am looking for the best sound. I mainly watch movies and listen to music. I am restricted on expense, but could probably spend around $400 for the whole set. Any suggestions?