I can't really tell the difference between one brand of potato chips and another. My only preference is that I prefer them without added flavoring. Barbecue, salt & vinegar, jalapeño, sour cream & onion -- feh. I like my chips with just a bit of salt, the way God intended.
If we can expand the topic to include non-potato snack chips, I've always been a Fritos lover. Man, those things are addictive.