When I was a kid in Ireland, the only two flavours (Taytos) you could depend on getting at the shop for your 8 to 12p (the price at the time) was Salt & Vinegar and Cheese & Onion. I preferred the former and I still like them but the acid will burn your tongue for a few hours, so I don't have them often.
Taytos invented flavoured crisps... https://en.m.wikipedia.org/wiki/Tayto_(Republic_of_Ireland)