ok im about 5'6 or 5'7 and i need new skis. im deffinitly getting K2's cuz my dads friend can get me the public enemies for bout $200 or less. my problem is should i get the 159's or the 169's??? im right in between them both. personally i think i should get the 159's, but my friend is pushing me to get the 169's. any opinions?????