Originally Posted by neonleonbst
Wish the lengths were the opposite.... The Unlimiteds do not have rocker while the K2s do. Rocker lets the skis shorten up when you're not using your total effective edge, getting you pre-engaged into your turns and tips up in softer snow. Because they shorten up, at shops we size rockered skis larger. So the K2's should be coming up to your eyes while the Unlimiteds might be better a touch shorter. K2 makes some good skis, the 90ti being the best and most advanced of the whole line. Waist width depends on your ability level and what conditions you would be in. The amp rictor 82ti or 80ca would be a good transition ski coming off of narrower skis, which it sounds like you are. The difference between those is the 82 will hold a better edge on hardpack with the titanium topsheet making it a little more stable in hard snow conditions. The K2 AMP 90ti is a quiver killer and will take any condition well but the width might take some getting used to if you haven't been on many wider rockered skis before. It is my favorite ski in the lineup it and skis easy for an aggressive ski. If you go with that, the 90 has an option to buy flat mount, which means you can drill up to 3x and the ski isn't stuck to the life of one system binding.
I know this thread is a few months old but as I occasionally keep researching and reading up as much as I can about several different skis for a possible purchase this is one line of skis (among others) that does spark my interest. In specific the A.R 82xti.
And I would have to disagree with the sentence above in "red".
The 90 is not the best of the line. When vs the 82 xti Its not necessarily better but actually just a bit different of a ski.
Just look at the k2 website and you can see what goes into each ski. The 90 is simply just leaning a bit more towards the off piste or softer snow side of the amp rictor all mountain spectrum. They simply just engineered the 90 towards that side more so than the others. Firstly its the biggest jump up in width of the bunch. Then they add some tech for softer snow skiing that the others don't have but conversely they also take some other tech out. Again, they just designed the ski to perform better in softer snow but that doesn't make it better, just different. .
The 82 xti would actually be the better suited "all mountain" for frontside carving and one might argue probably also more suited to east coast hardpack. Perhaps out west where the frontside piste is more often blessed with white fluff is were the 90 may play better. So it just depends how one views the ski for what its worth. The 82 has all the tech k2 is throwing into the new rictor series for making the ski more frontside carving bias vs the 90. So its actually the 82 xti that could be called the best and most advanced of the bunch if that's where one spends most of his "all mountain" skiing time especially if he is not out west.