This Port of Subs has some great specials right now- on Saturdays, 2-foot longs are $10.99 and Sundays, all cold footlongs are $5. You can't beat that with a stick!
Now on the sandwich hierarchy, I'd put Port of Subs above Subway any day. As good as Port of Subs is, it still isn't Capriotti's.
This particular location is one of my favorites - it's always clean and very rarely crowded. There are lots of tables and a clean bathroom.