This Longo's location is located downstairs in Maple Leaf Square, and is absolutely massive! I loved their selection and really appreciated the gluten free and specialty food sections.
The hot counter is very extensive, and this is a great place to grab a hot sandwich or meal and some picnic supplies before heading to the island (if you go, make sure you take the water taxi near Second Cup).
The sheer size of this Longo's location combined with the selection of foods and lots of checkouts make this a winner in my books!