honestly? the EDC - covers all the basics and allows you to convert your favourites using the method given in similar recipes. if you are looking to extend yourself, of all things, the calendars are pretty good, too, and shouldn't be overlooked - i have all the books, except quick fix, and find them good for everyday (and that's the impression i'm getting with quick fix), but for something more, go with the calendars (i have 2010, 2011 and 2012), dinner spinner and in the mix. in the mix gives you an insight into what chefs can do with a tm, which is good when you want that edge.
so...you need to ask yourself what you're looking for - everyday or something to extend you or something which will take you into another realm.