I have a pair of R30's coming in this week and I wanted to get a nice silk tweeter center channel that would work well with them. I know that Polk recommends the CSi20 which is no longer made. So I am looking for something from their most current like Would this center channel work well with the Polk Audio R30 Mains or is there another one you guys would recommend?? My price limit is $400 or less! :)