A-basin is great if you like the steeps, Vail and Beaver Creek are great if you have $108 for a lift ticket, but let me give you a tip for your next ski trip to CO: Wolf Creek Pass or Monarch Mountain. Both are smaller resorts, but with less people, THE best and most snow in Colorado, runs that don't get tracked out in an hour, steep runs, great terrain, and Monarch is only about $50 and Wolf Creek is only slightly more for a lift ticket. Both places, however, are not near the airports. Monarch is two hours from Colorado Springs and three from Denver, and Wolf Creek is 4 to 6 hours depending on where you are coming from. The little town of Salida just down from Monarch is very quaint and temperate even in the dead of winter, but Pagosa Springs near Wolf Creek Pass is tiny and pretty cold and snowy. So there is some give and take for those two resorts, but if you love to ski then its worth it to check them out. I worked in the ski industry for five years as a lift operator and have skied nearly every where in Colorado since I was 8 years old, so I speak from experience.