my grandparents have a house right in between the beav and vail so ive skied them both all all dif times of year so i know alot about how the mountains generlally are
in vail the bowls are by far the best anywhere in my opinion, there is better skiing at other resorts dont get me wrong but they have 5 different bowls which you dont find almost ever and theirs are all great and powderfilled and it is easy to find a fresh line even with all the kooks. In vail there is the worst kooks ever though. The park is ok its not too good i didnt really like the flow of the whole thing though
the beav is a more chill mountain in my opinion more ppl who kno how to ride and not to many wolf skin coats r being worn. the skiing is still really good and definately fun i love it there. their park is fun definately underated it flows geat and they make their features for all different levels you should def check out the parks
BOTH have fantastic woods skiing although vails is better than the beavs, check out HAIRBAG ALLEY at vail and you will know what im talking about and all the tree lines above it
hope this helps and have fun if ur goin there!!