Originally Posted by wujiang1900
I think I need to make some corrections since I posted.
I'm actually looking for an all mountain ski, and I prefer more powder skiing rather than groomed. And I think I plan to ski about 7 days a year.
I think I'm only an intermediate / advanced skier. I enjoy single diamond most.
Please give suggestion on what length to choose. I'm thinking the range of 166-172mm, will that too long for me?
So, you're looking for an all-mountain ski with a powder bias, so probably a wide all-mountain (100-ish mm), but not a true powder ski (110mm +, say). There are lots of great skis in this category.
Besides where you like to ski, can you say a bit about how you ski? For instance, do you have a race background and/or do you regularly carve high edge-angle turns, or do you like to pivot / smear your turns. In other words, would you prefer a directional ski (strong carver) or more of a surfy, smeary, big-rocker ski?
Answers to those questions could help answer questions about length, too. I'm around your height and 22 lbs. heavier, and my skis range from 165cm to 177cm. The 165s (and 166) are what we call "full-camber" skis— the tip and the tail of the ski are always in contact with the snow.
Full-camber, or "traditional camber," skis generally ski "long." So for a 5'5", 148 lb. intermediate, you're probably going to want traditional-camber skis more in the range of 165cm or thereabouts. Full camber skis are often excellent carvers, and often require good carving skills to get the most out of them.
Most powder-oriented skis have some degree of "rocker" (a term borrowed from waterskiing).
The illustration shows a "fully rockered" ski. You see full rocker now mainly on dedicated powder skis, not so much on all-mountain skis. Rockered skis make pivoting and slarving turns easy, and they make deep powder skiing easy, too. They usually don't carve well, so if carving's your thing, avoid them. Powder skis are generally very wide — 110 to 140mm+ — and they ski "short," meaning a skier your size might easily pilot a pair of 180cm or longer skis.
Most "all mountain" skis these days come with some form of tip rocker (or both tip and tail rocker) with camber under foot. Tip rocker is also known as "early rise." In skis with tip rocker, the contact point (where the flat ski first touches the snow) is brought back somewhat toward the center — the tips splay upward. This makes it possible for the ski to float better in powder, but, to a greater or lesser extent, may impact carving precision. Still many (e.g., Nordica Enforcers) carve well on harder snow (some reviews to the contrary).
Here's an example of tip rocker (or rocker-camber, or early-rise):
Skis of this type also feel shorter than length alone suggests. (My rocker-camber Nordica Enforcers, for instance, are 177cm — ten centimeters taller than I am — and they feel almost too short. I've skied 180cm Rossinol Sin 7s comfortably.)
How these different cambers feel on snow also depends on construction and materials (core material, laminates, damping materials, etc.), which affect the ski's stiffness and flex, etc., and side-cut (the shape of the ski as seen from above). The variables are almost too many to count, including the variables that the skier brings to the equation. That's why most knowledgeable skiers suggest demoing as many skis as possible before making a decision.
If what you've told us is dead accurate, you'll probably be looking for a ski of, say, 90-100mm wide, with some tip and maybe tail rocker. After that, your skiing style and preferences will narrow the answers somewhat.