I currently have a pair of 170SE for mains and a 340SE for center duty. I'm looking to expand to a 5.1 system for HT use. I'm not exactly knowledgeable when it comes to audio so I'm hoping someone with more experience than I can lend a hand. I'm aware that most people are going to want to recommend that I use another set of 170's or even 200's for surround duty but that's just not going to happen. I like audio but I also like aesthetics and I'm not keen on a set of boxes precariously perched on my walls. So, I've been looking around and I've come across the following speakers. Ideally I'd like to try and match these to the fronts as much as possible. I'd also like to stay around $300 should anyone have any other recommendations.
Polk FXI3
Infinity BETA S250
Klipsch SS.1
Thanks!