energy
any of the energy system whether is the take 5, take 5.2, or encore, will suite you well, i have a 9 by 11 room with the subwoofer (ex:L-s8) from the take 5 set up, and it fills the room twice over with powerful clean bass. and the sats are good enough for what they do and hte take 5.2 and encore are way better.
that is what i think you should do
sheep.