We have a Magimix Juicer. A mixture of cookers and eaters together gives a nice taste (to me anyway) Bramley and Cox (1/3 to2/3) is a nice not too sweet not too tart drink. It freezes well too and keeps its taste even after 12 months.
Puree is dead easy, peel and core and cook with hardly any water over a low heat until soft, allow to cool and then freeze. This we use either in cakes as sweetener so can reduce the sugar content, or I put some in a bowl in the microwave, warm it up and eat with Soya Cream. Those who can take dairy produce say it is even better with Yogurt!
Keeping depends on the temperature, they last longer in a cold winter than they do in a warm one. Most eaters go soggy very quickly, but Ashmead and Court Pendu Plat are supposed to last until Christmas. We shall see.