The best day for 'Nando's sandwiches are Tuesday/Thursday. One of the best deals downtown, IF you know what to order.
Once you go here & get the buff chix, you'll never go to Subway again, and you may even think twice about Jimmy Johns. It's a good bang for your caloric buck. My personal favorite, and the only thing I order, is the Buffalo Chicken sub. It's my favorite, and it's relatively healthy. The bread at 'Nandos is incredibly soft & delicious. Also, if you go to their website you can print off some solid coupons.
Tuesdays & Thursdays are combo days; easily the best lunch deal downtown. 13" sub, free chips & drink for around $6.
The owner, Fernando, is usually working the cash register, so he always strives to make sure you enjoy your order. He's a good guy and a Pittsburgh success story, so if you work in the area, do your best to support the business.
Support your local non-chain restaurants!