I haven't been to pine knob, but a group of my friends have gone to Mt Brighton quite a bit the last two years (we all go to U of M too). The mountain itself is tiny but the park is pretty fun. Jumps aren't bad for the midwest and they have plenty of rails - plus most of it's on tow ropes so you can get a ton of laps in. They have a really cheap college pass and it's on the epic pass which is dope if you plan on going out west. I would definitely say Cannonsburg's park is still better, but it's a 2 hour drive vs. the 30 minute drive to Mt. Brighton.