Breckenridge offers many different runs. They now have the highest lift in North America. They are opening another 100+ acres of terrain and offering a new Gondola in 2007. This will spread the people out. There are often many people skiing at Breckenridge. They have many high speed lifts so the lines often move fast.
I do find myself in the lift line more often at Breckenridge than other surrounding mountains. However, as mentioned above, the lines move fast because of their many high speed lifts.
For the day skier, they have free parking lots with busses transporting you to various lifts. There are many busses so your wait is never very long. Breckenridge has compensated their shorter runs with excellent lift service and bus service.
I highly reccomend you go to Breckenridge and if you get there on a poweder day - have a great time!!!