Upgrading my RM6000 HT to something a litte more serrious. So far csi5 center and fxi3's for rears(ebay). Next purchase will be rti10's for mains. Polk is offering $200 off purchase of sub's which would bring the price of the psw505 down around $300. I know that svs seems to be the sub of choice but at this price would this be a good investment? 75% movies, 25% music mainly hard rock. Thanks for any advice.