I am very satisfied with my two bows. An advanced viola student of mine will also switch to an S6 and I will sell all my wooden bows. The funds will be spend on second carbon bows and my wife will also gather one...
Our blind tests of violabows with one S7, two S6 and two wooden bows at 4,000 SFr were a close-run thing for the S7, followed by the two S6 (tied!), and the two wooden bows far behind (although I know them in and out!). That was also a little frustrating... Only one time out of 20 tests a wooden bow came in third place!