The question was: "What shoes are better for parkour? K-Swiss Ariake or Adidas Nova??"
The best answer according to raiting is:
For starters, I am sponsored by K-SWISS.
Of course, this gives me pretty good knowledge about at least one of the shoes :) I've had as many pairs of Ariakes as probably anyone - and I love them.
Pros - Grip, Fit, Feel, Durability
Cons - Break-In, Cost, Durability
How can durability be on both lists? Well, the perfect parkour shoe doesn't exist yet, but the Ariake's are a darn good shot at it.
Fit - buy the Ariake 1/2 a size smaller than you would most shoes. The Pro / Con here is that the shoes will be tight and probably not even comfortable for the first 3-4 times you wear them, and some people even get a heel blister. Stay on it. The payoff is that you end up with a shoe that feels like it was grown out of your fit instead of built around it.
Once you have a broken in Ariake there is more "feel" than any other shoe I've tried.
Grip - Ariake. No Question. For dry (and even some wet) surfaces these are awesome, but, like any purpose built shoe it has negatives, in wet grass or mud these are a little worse than ice skates. On Concrete and brick walls they are like wearing velcro.
Cost- Start at $100 and hard to find at a discount, so treat them nicely and use the for training and they willlast you as long as any other shoe that takes this kind of punishment.
By the way, here are those shoes:
