Replying to Trip to Denver, What Mountains to Ski?

I'm taking a trip to Denver over winter break this year. my friends and I are planning on staying around 5 days and want to ski at least 2-3 days of our stay. we definitely want to ski breck one day, but we don't know where else to go. as college students, we are trying to keep our costs to a minimum, and a day ticket to breck isn't looking too cheap. are there any other mountains close (within 3 hours of Denver) we could ski the other days that won't break the bank? thanks guys.