Mammoth Mountain Ski resort is top notch with an excellent variety of terrain and and ski lifts are very good too. I highly recommend getting an IKON pass to offset the high cost of single day lift tickets if you ski more than 5 days here per season.
The scenery is amazing.
Monday through Thursday skiing is your best bet to avoid large crowds on the weekends.
Its worth the drive from Southern California areas because there is so much more areas to ski and way better snow coverage than any SoCal ski areas.
There is a good mix of Snow boarders and Skiers at Mammoth Mountain.
With so many ski runs and huge areas one can ski here the whole winter and well into the Spring and not be bored.
ENJOY!
RJ