4frnts and moments are super popular in the park scene, especially on NS. Moments skis have only been around for a few years but they have quickly built a reputation for making great skis. Many many nsers love theres. 4frnt has been around for longer and is a really reputable brand. Id be stoked to have a discount for either of these companys, especially moment.
Liberty isnt as popular as moment and 4frnt but ive heard good things.
As for klint, i know nothing about them.