what size speaker sould be preferable for alounge around 12'x13' with a working area of around 12'x10' (due to stairs being in the lounge). would floorstanders be ok as they will sit fairly close to the back wall with one of them in the corner. or should I opt for smaller stand mounted front speakers. I'm quite keen to use bi-polar for the rear channels. Or should I simply opt for a sub/sat combo, perhaps liike the Mordaunt Short Premiere. I'm keen to have a nice clean sound, not just loud and boomy. Any thoughts?!