in this case, it's just the vinegar and I'm not so sure I like it. It's definitely not dip-able and while it really is the flavour of balsamic - when would you really have balsamic on its own? Even when simply bread dipping - it really needs the olive oil and a tasty bread to make it what it is.
Everyone's got their favourites, here's my personal write ups on the crisps I try.
Please feel free to comment with your own reviews!