According to the lady serving me, all the sandwiches are the same except for the meat and the cheese, which is pretty much what you pay for. Other than that, you`ve got a whole gamut of spreads and veggies to add on to your sandwich, from tzaziki to roasted red pepper hummus to sprouts.
And yes, french fries in the sandwich! It adds a nice crunchy/chewy/salty potato layer to an already stacked sandwich.
They have a 10% discount for students too.