Need help for surround sides and back speakers!

saki
saki Posts: 4
edited January 2013 in Speakers
Hi, I have a csi a4 center with rti a1 front speakers and two psw505 subwoofers. I have Polk sattelites rm101 mounted for surround and surround backs to complete 7.1 system.

I want to obviously swap out the surrounds but wondering which Polk audio speakers would work without killing the wallet. I would prefer a smaller Polk speaker and could be vintage as I could go on ebay to search for. I have them hung from ceiling right now that's why I want some smaller Polks!

Any suggestions?

Would something like T15's work? Fxi's seem big and pretty hearty in price.