thalls are 350, ar5's are 389. I ski about 50/50 park, but I do have a pair of original pe's(from about 3 yrs ago). They definitely hold there own outside the park so that doesnt worry me that much. I'm kinda looking for a pair of skis for park, and to butter and goof off on the side of the trail with. That's why i'm leaning toward the tanner...plus the tanner;s cheaper. Any input would be great.