I am planning on purchasing a Yamaha5860 for a 15x20 room. I will be using a 6.1 set-up. I need small satellite speakers so am considering either the HKTS8 or JBLSCS180 systems. Any opinions on which is better? Also, does anyone know if there is any difference (other than appearance) between the JBLSCS160 and JBLSCS180?