I really like subway, it's about the only place you can get chipotle sauce in the UK. Used to go there every week.
That said, I haven't bought it in about a year. The prices have gone up to the point where I feel like I'm spending insanely irresponsibly if I'm not buying the absolute cheapest food, and Subway is no exception. The stress of knowing I spent far too much on something far outweighs any enjoyment it might provide.