I normally ski on 170's and have decided on a pair of Atomic Blackeye Ti's. These come in 174 lengths and 167 lengths and I'm not 100% sure which length to go for. I am relatively light (10 stone UK) and know that the Ti's will be challenging to ski on, but, I am looking for a ski to help me improve and be a better skier, and ones that I can improve on and grow into.
My thinking is that the longer skis will easier to bend as it is always easier to bend a longer plank than a shorter plank, but 167 is closer to my height of 169 cm. I am an advanced skier who is most comfortable on red pistes but can handle most blacks (European rartings)