Question re: PSW450

Hoopnoop

I'm looking for a subwoofer to add to my Polk speakers which include two RIi10 front speakers and a CSI5 center channel.

I've been looking at the PSW505 but am on a tight budget.

There's a PSW450 in my local Craigslist for $100. Would that be a good match for my system? Any issues with this sub?

thanks