Are you about 70 kg and has a height of about 170 cm?
Well then you're like me and I chose the 173cm and are very pleased with the length and dimensions of my skis.

i am 155 and 6 feet so a little bigger and I love the 182s. I ski think east coast trees all the time with no problems. If I were out west on bigger faces I would even go longer. Also I would mount on recommended not center.