If youre going to be doing lots of jibs in the park, the THALL is going to kill, although, they are specific, so perhaps try before you buy?
The AR6's are more all mountain jibby, so they would kill it in the jumps, but i dont know how much of that you have in MN.
the STL's are going to be very similar to the AR6's with a smaller footprint.
Nevertheless, all 3 are going to slay in the park.