We actually just went to Colorado 2 weeks ago. We flew into denver and made the 2 hour drive to Dillon, CO. which is about 10 minutes away from Breckenridge and about 2 mins away from silverthorne) was a lot cheaper to stay at. Breck was pretty nice, lots of outdoor activities. It does take some getting used to due to the elevation change, much harder to breathe at 8000+ft above sea level. We rented a Jeep for the week (if you rent a Jeep commander make sure get one with a V8 the v6 we had barely made it up the hills on rt 70)