There are a ton of sub shops around Madison, all around the $10 range with delivery and tip. When late night comes around and you're looking for a bite to eat, don't look here.
I'm not a super adventurous eater when it comes to my subs- whole wheat, avocado, lettuce, tomatoes, no mayo and just a smear of dijon. Not once have they gotten my order correct. Other reviewers have mentioned issues with toppings missing, so apparently this is a common occurrence. The last (and the deal sealer for me) was when it took 2 hours for what was literally just a mustard and lettuce sandwich. Thankfully I went through Grubhub and was able to get a refund fairly hassle free.
With so much competition in the area, these guys really need to step up their game. If it's the allure of a warm sub you're looking for, try Firehouse Subs.