Always a great workout when I go to HKPK. Trampoline wall is my favorite, and it has gotten so popular that they've added in a third trampoline! Open gym sessions have similar pricing to other gyms around the valley, but last much longer (6 hours vs. 2-4 hours at other gyms). They're always adding new obstacles and changing their facility layout, so there's something new to try on every visit =D