I've yet to try Connecting Threads, but I LOVE Aurifil 50 wt and Masterpiece by Superior Threads for piecing. I got the Aurifil on clearance from www.Tristanthreads.bc.ca or maybe it's www.Tristan.bc.ca. Candace of this board gave us that tip. With the clearance, it was aboutvthe same price as CT. It's all it's cracked up to be.