That's basically my setup. The Polk's IMO are a better system. The towers alone probably weigh twice what the Athena's do (at least they feel like it). The Athena's handle power much better, and you don't need a powerhouse of one to power them like the RTi's. Dollar for dollar, everything being the same, go with the Polks. If you can get the Athena's for a lot less, go with them. Depends on your receiver. Any good SV Subwoofer will do with either system as long as you have the room for it. Figure $500 for an SVS.