I find Subway restaurants to be pretty standard throughout.
My favorite thing these days is the foot long veggie sub. It's only $5, which is a bargain. If I'm a little hungry, I just eat half. If I'm starving, I eat the whole thing.
I always get every single vegetable that they have. I want the banana peppers, the jalapeños, the spinach, the black olives, the onions, lettuce, tomatoes, etc!!
They load up the sandwich quite well with veggies. It's a healthier fast food option. I don't eat fast food much, but Subway can hit the spot.