Surprised at all the love the Allentown collection is getting. While it does have a handful of top tier keys, it's at least matched on that level by the Larson, Windy City, and Kansas City finds; and the Larson and Windy Citys had much deeper runs.
But the question should also be clarified. Are you asking which collection would you rather have in aggregate, or which collection would you prefer to have a single comic from. That is, is it the quality of the collection, or quality of the books in the collection.