So I have been looking around at some towers to replace my L/R front Energy Take Classics and I have stubbled across these four speakers. I currenty have a 5.1 system subwoofer, and am looking to make it a 7.1. I haven't been able to find a lot of discussion on this so I am looking for some peoples opinions on what speaker would be the best. So far I am leaning towards the RC-30's because I found them for $400 a pair where the CF-30's are $600 a pair. The RC-50's I found for $675 a pair where the CF-50's are $800 a pair. Because I already have a subwoofer I am not really sure that it is worth it for me to spend more money on the 50's just to get a little bit more base. Another speaker on my list is the EMP e55ti. It has really caught my eye in the reviews and under $1000 showdown that Audioholics did. Please give me any opinions as to what would be the best choice.