I already own "The New Best Recipe Cookbook", which is also put out by America's Test Kitchens and Cook's Illustrated. My question is, how much overlap is there between these two books? The New Best Recipe is my favorite cookbook by far, and I would love to buy this one as well as long as it is not just a duplication of the cookbook I already own. If anyone here owns both cookbooks, please let me know if they contain a lot of duplicated recipes. Thanks!