After much thought and research, I decided to upgrade the center channel with the JBL Northridge Series EC35. I got it because the place that I bought it from has a 30 day no hassle money back guarantee. Also, I wanted a three way center channel. I heard a lot of good things about it and I got it at a great price. It was between the CS1 and this one to go with my RM6005 satellites. IT IS A HUGE SPEAKER!!!! I am very happy with the purchase after watching a couple of movies and listening to some cd's.
That being said, I had the speakers wired the "Polk way" through my subwoofer (infinity bu-2). I decided to switch to the traditional method of using the sub out RCA cables and directly wiring the speakers to my receiver. I am actually happier with the sound after switching. I had been having trouble with voices on the center channel and overall lack of performance on the 6005 center channel. I have overcome my disatisfaction and can now rest easy. My question is, does Polk recommend this wiring only because of the LFE or are there other reasons? I don't think I'll switch back as I am very happy with the sound now that I've made the conversion. Just thought I'd let everyone know who gave me advice. Thanks to all who help out with my questions for a truly modest system, but one that I enjoy very much. This forum is great.