Seabrooks have always been a firm favourite in our family, we used to buy them regularly when I was growing up in Bradford in the 80s, and I still buy them now after moving back to Leeds a few years ago after living on the coast. They're a good crunchy crinkle-cut crisp, strong in flavour and not as thick as McCoys. Shame they don't sell them in windowed bags so you can go for the non-broken ones.
I tend to switch between these and Morrisons Baked (much better than walkers) if I'm buying a few packs to go with lunches.
(with the gurning faces on the front)