What is there to say about Vail? It has everything. Truly, everything. The back bowls are the real highlight for me, that's what keeps me coming back. Even on a crowded day, once you get to the bowls you can always find space to yourself, and some fresh on a powder day. I've been to Vail many times over the years and have always found it to be a well run resort. It has a very nice village (not quite up to par with Aspen, but where is?), and there is plenty to do. It is a great place for families, beginners, experts, singles, anyone. Even if you prefer other resorts, Vail is definitely worthy of at least one trip in a lifetime. Chances are you'll find yourself coming back!
A tip if you have kids: make sure you look for the children's attractions on the trail map and hit those up, always a lot of fun.