a big factor is the dive out there. if you like chilling for hours in traffic on the 10 and once again in the mountains, go to bear. the mountains alright, but its far as fuck and can take 3+ hours to get back on weekends/ with traffic.
high is a little cut straight out of Pasadena, so you can avoid traffic on the big freeways by driving straight though the mountain. judging on their forum on mthigh.com, they seem like a bunch of broke ass so cal snowboarders that congest the mountain.
i ditched the bear pass this year to give high a shot, mainly cuz the night riding 7 days a week.