Mt. Baldy is nicer than Mt. High after a good snow. They actually have some pretty good terrain at Baldy if you look around. I hear they even have a tiny park there now. But its SoCal, its gonna be 70 degrees half the time you are riding, might as well go to Mt. High in the slush and enjoy all the crazy rails, hot chicks, people getting drunk/high and general SoCal atmosphere. Baldy is for old dudes.
Another thing though is that Baldy tickets are really cheap. If you go to Ski Dazzle you can usually buy Baldy tickets there for like $25 each. Its worth going to Ski Dazzle anyway for the free Bear life ticket.