You have to buy the right size board to do a proper evaluation! With your height and foot size, you should be on a 153. There is a significant difference in waist width between a 153 and 155. This difference is what accounts for your lack of nimbleness in turn initiation and edge to edge response. I am your size and have ridden both lengths. The NS SL does not shine in icy conditions. If you ride firm snow most of the time, a hybrid camber board or a Mervin C2 Btx board might be a better fit. Look for a board that has a waist width less than 25.0. You'll be a much happy camper.