If you go with the CS1.6's, save some cash for a nice subwoofer. I auditioned them with the SCS3, and while the imaging and soundstage was very nice, they need some help in the low end. The SCS3 really impressed me. I picked one up to use with my CS3.6's. In fact, three SCS3's would also be a very good setup. I'd go for the Thiels, but then again, I have been smitten with the sound of Thiels for some time. I am using some older AR bookshelves (TSW series) for my surrounds, and they seem to match up fairly well.
Happy hunting, Tom.
Happy hunting, Tom.