Culled many, too many cookery books last year and got the 'library' of cookery books down to about 250......
Not a fan of either Jamie or Nigella (find JO books have many mistakes in them).
But do have every one of Gordon Ramsays, and love them. His Christmas book has been well used over the years, and the new one Ultimate fit food has some good recipes in. No matter what I may think of him his cooking is excellent and are my go to books.
I tend to have a quite a few obscure books, esp for Japanese cooking, and a few very old Mrs Beetons for real old fashioned cooking.
Sold quite a few of Keith Floyd's books and got a tidy sum for them, not a fan of Rick Stein though, but do have a couple of his books. Have got most of HFW books but they have become repetitive so stopped buying them
Prue Leiths Bible is in a sorry state, as are all of Delias. The French Laundry by Thomas Kelly is another fav.
Nose to tail cooking by Fergus Henderson has to have a mention.
Oh and recommend a Patisserie at home book by Mélanie Dupuis.
I could go on and on about cookery books, and have so many different types but its a lifetime of collecting them, sorry I have gone on havent I!