I tried Visual Studio 2005 (Whidbey) today, particularly to make use of the class designer feature. Visual Studio has been my favourite shrink-wrap product among all Microsoft products (of course, in addition to the product out of my group - LCS 2005 which is also in beta currently :-). I think Whidbey really rocks and the class designer feature is very cool and will make developers/designers life easier. Check out Ramesh's blogs  (he is part of the class designer feature team in Whidbey) to learn more about this feature.