Hi normad, and welcome to pets.ca!
What does Sammy currently eat?
Some tips on what ingredients to look for in a good canned food can be found at this link: http://www.catinfo.org/?link=cannedfoods
Not sure what you have available near you, but some of the brands I feed my crew (along with 2 meals a day of raw) include Wellness, Nature's Variety, Precise, Weruva, Murr, Schesir, ZiwiPeak, and probably a bunch more I'm forgetting. I think variety is important when feeding cats (although try to minimize the amount of fish-based flavours, which aren't particularly healthy for cats for a few reasons): it mitigates any nutritional deficiencies or excesses that might occur when only 1 or 2 products are fed, and it helps prevent cats getting addicted to that food.
Hope that helps!