Replying to Craigleith or snowvalley

so heres the deal.  I'm going to snow valley all day on tuesday and craigleith all day on thursday for school races.  We do like 2 races then ski park for the rest of the day. 

I have to skip school for this and my parents arent too happy with that since its my senior year and i also have calculus this semester too.  I might only get to go to one.

Over all can anyone tell me which has a better park and runs in general?  I've never been to either hill.