Just munched down some salt and vinegar after a lovely ham & cheese and garlic Philadelphia sandwich. They are hard to beat, especially as far as old classic go.
But over the years I've also enjoyed:
Lamb and mint sensations
Roast beef monster munch
But ultimately I think salt and vinegar kettle chips are #1. Happy to be persuaded of the error of my ways, hoping for some new flavours to try after the experts have contributed to this thread.