So, what is your favorite apple variety? The one I'm currently liking is the King David.
My favorite apple for January is Perpetu "Everest", a crab apple that is small, hard and edible only in the strict sense, but oh, the birds that it attracts in the middle of the winter... Is unique in that sense. Unless the other apple trees, It keeps the fruits from Dec until March when the birds need it most. In your climate the mileage may vary.
For eating, Mingan, Golden or Rubinette are very tasty if picked in their moment, but my favorite apple is any resistant to the most diseases possible. This means a thick skin.