i was at breck mid march and had a great time.  A few days it was really crowded at the bottom, but if you stuck to the top half of the mountain, falcon and e chair it was alright.  The had big features, but i wasn't there to just ski park we did a lot of other stuff around the mountain too.  The hikes we did were awesome, some of the best skiing i have done.  I also skied Vail and Abasin which i had great experiences at too, it all depends what you want to ski.  I find i ski park enough through the season at home and want to ski more of the mountain and natural featues when i get the chance.