No matter how much opinions we give you, you are highly recommended to audition both speakers yourself. It is a matter of personal taste. Some like it open and detailed, but some like it laid back and relaxed. Both are very decent and capable speakers. If you pay attention to upstream components and cabling, I am sure you can make either speakers sing.
I have owned CS2 and CS3.6. I could make the 3.6 dull sounding and boring by mismatching amps and cables. Good luck and hope you make the right choice.
I have owned CS2 and CS3.6. I could make the 3.6 dull sounding and boring by mismatching amps and cables. Good luck and hope you make the right choice.