Dunns Famous Steakhouse Delicatessen, established in 1927, expanded greatly and then collapsed but is now back again. Their smoked meat is good, but prices are a little higher than Ben's. Service is good, and soda is a decent size and includes a refill, unlike Ben's. There are refills for coffee.
I wouldn't recommend their poutine with smoked meat, as the gravy and cheese flavors mixed in with the smoked meat are very filling. Nor would I recommend their super sandwich, with a large amount of French fries, coleslaw, and pickle; it's just too much food. Go for the small-size sandwich and share an order of poutine. It is fully licensed and open 24 hours.