Seriously? From a born OC skier, don't bother with High. It's way too crowded ALL the time, the jibs and jumps are rutted beyond belief, and it's an ice sheet at night. Sure, it's skiing, and I'll take some skiing over no skiing, but I'd rather just drive the 40 minutes extra to Bear and have a LOT more fun. Bear is a better city, WAY larger mountain (Bear/Snow Summit), and there's some semblance of nightlife if you'd like it, though not much.
Big Bear is so sick, besides the whole Ashbury crowd running around, thinking every skier is a fag.
Enjoy OC, see you around.