I sell both Nokians and Innovas. The Nokians are superior in that they have carbide tipped studs. They will last longer and bite better on ice. But, the Innovas have an advantage in that the studs can be replaced if lost. And you will lose some studs. My personal favorite store bought are the Nokian Extremes. 296 studs that really hang well. But my absolute favorite are the set I made myself out of Specialized Storm Controls over 14 years ago. They are heavy but I can climb frozen creek beds like I was stuck to them.

All this said, studded tires do nothing in the snow. They work on ice only.