this is probably going to sound really confusing and stupid but hell, ill just say it haha. so i got some ar6s this year and im 5 foot 6 and 115 pounds. i ordered the ski in a 166. they looked HUGE when i got them in because they were an inch above my head. i was absolutly terrified to ride them because i came of off a 145 or something that was tiny. after a ton of controversy of if this ski was too big for me and if i could flex it properly or not, i decided keep them and mount them fairly close to center (1.5 back). when i clicked in to them in my basement just to fool around with them, i was so glad i got the 166. the 161 wouldve felt way to short and i could flex the 166 fine. so just the moral of this story, just go to the shop, get a ski that 176 and a ski thats 181, stand on them as if you were skiing (with your shoes off though) and see which one fits your eye best when standing over them. you'll probably get some crazy looks, but at least you wont be second guessing yourself for a long time like me.