I have to change my old Carvers( TFM 6 cb, TFM 35x and CT 26) and perhaps my Bose Acoustimass 5. I am lost. I am finally deciding between a Marantz pm7005 and a Rotel ra 12 but I need small speakers (my wife doesn't want big stuff in our living room, I used to have JBLs, but I had to take them away), and I think I need a sub. I have a 21 x 18' living room. I appreciate your help