What are your favourite sandwiches to take on the train? I'd especially like recs for sandwiches that are still pretty good the day after, since I'd probably be buying the sandwich the afternoon or evening before a morning train.
I've bought eggplant parm sandwiches at Mustachio's in SLM, and I know the Bifana would also be a contender.
I'd think Black Camel sandwiches might be prone to sogginess.
Ideally, I'm looking for something within a few blocks of the Yonge subway line south of York Mills.