Dave's rocks. If you are looking for a cheap sub, with bottom-dollar meats and poofy bread, stay at Subway.
Dave's uses a crispy-crust loaf, similar to traditional New Orleans Po-boy bread. You won't cut your gums on the crust (like you might on the best Italian bread), but it's crisp.
The meats, cheeses, etc. are all quality stuff. Good dressings.
If they would just make a banh mi, I'd never go anywhere else for a sammich.
You will spend a couple of bucks more here than you would at Subway. It's worth it.