I am 6' tall and 180 lbs and ski on the 181 Mt. Baker Superlights. I mounted them for telemark skiing and they work great. I ski them backcountry and at the area so they are an overall ski for me. I think that you want them a bit long since they are really quick and light so they ski like a shorter ski. They float really well in soft snow which is where I think that they perform the best. However, they do hold a surprising edge on hard pack! This is a big plus for these skis! I demoed them before I bought them and the fact that they held a solid edge while claiming to be a powder ski is what sold me on them. In backcountry powder these are awesome skis. As someone mentioned below, they aren't so fat that they skim over the top yet they are wide enough that the tip floats making powder skiing fun. When telemarking on hard pack they can be a bit chattery unless you work the turn but this brings back fond memories of the days when you had to work every turn. The bottom line on size is since they are so light they can get tossed around a bit more than a heavier ski, so the extra length helps to make them a bit more stable. Something about these skis make them really quick even in longer lengths. I think that tight trees or moguls are about the only place that the shorter ski would be better. Hope this helps!

I am the same weight and around 6 feet tall. I bought the 181cm regular Mt Baker, after receiving advice from a bunch of different people that the super-light would be pretty soft giving my weight and power. I have been really happy with the regular Mt Baker for multi-day ski tours. The 181cm Mt Baker is the same length as my old 188cm Dynastar Legend's, and also as long as my 193cm 4Frnt EHPs. K2 seem to have a different approach to measuring ski length.

You should probably check out the regular Mt. Baker, a beefier version of this ski. It adds weight to the set-up, but handles harder skiing a lot better. With this added ski strength, the 181 should be enough for you.