6 & 10 = close to perfect. Why I plan on getting the new Sonic in a 11m. Would be a fantastic travel quiver 6/11. Well.. the Soul12 makes it perfect for me and my son.. 8) Great set, 6, 10 & 12 for foiling (72kg) If I would only foil and must take 2 it will be 6 & 10. 6 is nice on a surfboard too!