my top 3:
- Doritos - Cool Ranch (ok, its not the most creative, but it's a classic)
- Marks & Spencer - Beef & Onion crisps (in the UK, "chips" are actually fries... "crisps" are chips)
- Miss Vickie's - Honey & Roasted Garlic
Walkers makes some kick ass flavours too. argentinian flame grilled steak, french garlic baguette, japanese teriyaki, roast chicken (this one is super salty, my fav!!!) they make Monster Munch too... even tho i know the pickled onion might be a turn off for most... i like 'em.

the US has a lot of good flavours too... but i look to them for other treats & snacks... most importantly, Cheez Its and Cheddar Chex Mix.
my bf went to Spain recently... and knowing my love for chips, she brought me back these:

jamon aka ham Ruffles! mmmmm... i'm sad that i finished them already, but i sure enjoyed eating 'em! Ruffles has made some damn good chips... another fav of mine: sour cream & onion. that is a classic that i will eat from any brand.
whoa. i talked about chips waaaaay longer than i meant to. i'm thirsty now.
