Update: July 18-2016: Please note that this location of the Big Slice has been closed since May 30, 2016. It will be missed as I liked going there for lunch every Tuesday, hope you guy open up in the surrounding area soon! Cheers.
Been going to the Big Slice for ages!
I work in the downtown Toronto area & this is a quick place to grab lunch.
Don't expect a classy clean format, the dining area is very casual and people come in just to eat and take off after. I can't comment on the delivery as I've always just went in for slices. The Pizza Slices are a mixed bag since they have different people making it on different days, so make sure and choose one that looks fresh. Overall it tastes great as it never has any overpowering spices. It's one of the largest pizza slices in the city. I like to dab the grease out with a napkin before I eat it - especially if your slice has pepperoni, ham, sausage etc...
The service is very straight forward and seems neutral. (No smiles, but just fast service)
Bonus Note: Make sure and go on Tuesdays as the pop/water is free with a slice, so a big slice & drink is 5 bucks.