Innovas are Ok and definitely not junk. They work good in non-extreme riding conditions where ice patches are basically flat. The studs will wear much quicker than Nokians as they're not carbide tipped but you can also replace them fairly easy.

If you want a cheap studded commuter tire, Innova will fit the bill.

If you want a tire that will last and give you more bite, Nokians are the way to go and worth the extra coin. I've got a set of Extremes on my winter MTB and they just plain rock. Great for icy trails and more extreme conditions like off camber ice sheets.

Neither is a miracle tire that will let you ride like a mad man on glare ice.