Sam, Go longer then you think. I just skied my 191 for the first time today, and loved them. To bad they do not make a longer one, but I have my 198 XW labs for that. They ski much shorter then the length cause of the early rise tip. They can carve a really good short turn, but also are great at really high speeds, carving monster turns. I mounted a pair of Sth 16 and they are great, but I also weigh 200 lbs. The 14's have a different toe piece this year and you can not adjust wings, like on older 14's and the new 16's.

Sam, sizewise, definitely the 174, I'm 5'8" as well and because I'm working with Salomon, I've the chance to try a lot of sizes. I you like big turns and ski fast, I'd even recommend the 182, you'll get more stability on groomers at high speed and even more flotation in powder. If you're more on the cruising side or if most of your powder days are in the trees, go with the 173, but FORGET the 164. For bindings and if you privilege durability in addition to safety, the STH16 is a great choice and with a DIN 16, considering your weight, you've plenty of room. You'll love the control and the precision provided by the stiff toe piece which perfectly matches the personality of the Shogun.

do you recommend any certain bindings with them? I heard good things about the marker dukes, salomon z14s, rossingol fks 140, salomon sth 16s. Also,(sorry for all of the questions), would the 164 or 173 be better for me, as I have heard others mention that skis with rocker ski a bit shorter than solely camber skis.

Sounds like you definitely want to take out the Shoguns- they fit all the categories that you want them to- great powder ski with amazing flotation courtesy of the reverse camber, good side cut for carving, and full woodcore and bamboo construction that allow for stability and responsiveness. It's an amazing all-mountain performer, that adapts to and makes varying conditions really fun.