The toasting makes Quizno's better but they charge too much for their subs.
To me Subway is the MacDonalds of subs. Not very good, but popular.
I liked Tubby's subs around the Detroit area as far as chains go. But the best subs always seem to be from mom & pop shops and not from chains.
My all time favorite was a little pizza shop where I went to college (H&R's at Central Michigan University). The subs were inexpensive, large --and were toasted in the pizza oven.