I like softer apples and not the bright red little stones that supermarkets tend to sell...
I tend to go for the more acidic ones.
And also cook with apples a lot. Not just baked apples (if you've not had Friar's omelette, I recommend it) but also main courses. Chicken with apples, a bit like coq au vin, is a staple.
Not many cooking apples in Poland though that's not a problem because the sharper eating apples are often better, especially for racuchy.