I haven't had a Subway sandwich in a while (and for a while, I mean a looooong time, like ages).
That doesn't mean I don't remember what Subway sandwiches I loved however; I distinctly remember the meatball marinara being my all-time favorite. In fact, that's the only sandwich I remember having from Subway, and that's because that was pretty much the only sub I wanted from there. I loved it that much!
If I remembered correctly, I first chose that sandwich because it has meatballs in it (and I love meatballs), and ever since I never tried any other kinds (or maybe I did?)
If I get a Subway sandwich again there's no doubt I'm getting that meatball marinara one again