I've been going to Bloomer's on a weekly (or more frequent) basis for a year and a half. It is far and away my favourite restaurant in Toronto. The owners are amazing and the staff I've gotten to know are incredibly nice and very helpful.
There is a great range of sandwiches, bowls and salads, as well as loaded fries, onion rings, deep fried pickles etc. I've tried almost everything on the menu (in many cases several times over) and it's all delicious as heck. On the whole, there are no things I order more than others, because there are just so many great options.
Oh and they have a huge number of incredible baked goods--donuts, muffins, cookies, cinnamon buns, tarts etc. They are my family's go to for birthday cakes we don't make ourselves.
If you want to go to a great sandwich and salad and dessert shop in Toronto--go to Bloomer's. And then go back. They are lovely and great.