Advantages: A huge range of flavours.
Disadvantages: Not widely available
The shop across the road from where I used to work sold these - these were the only crisps they sold. No Golden Wonder, no Walkers, no Smiths (remember them)? Seabrook only.
And so it came to pass that if I wanted a crisp or two with my lunch it would have to be a seabrook.
These crisps are ridged, but they are nothing like McCoys for example. they are much lighter and thinner and as a result feel crisper in the mouth.
That in my opinion makes them perfect for having with a sandwich or with a salad. They come in a huge range of flavours, about 22 I think including their hot and spicy range. so as wll as the usual flavours, expect stuff like:
Bacon & Brown sauce
Chicken & Stuffing
and from the Hot and spicy range
This range of flavours make them ideal for matching up to whatever sandwich you are making.
I particularly like the Cream Cheese and Chive flavour with some crusty bread filled with finely chopped onion, green pepper and cottage cheese.
Summary: Plenty of flavours to choose and put in a sandwich.