(1) Beaver (2)Northwestern(3) Oak, I'm retired doing vending for 4yrs. Started with Beaver only, Add Northwestern 80s for 2' toys do to price. thay are good machines. Later got 10 northwestern Beavers LOVE THEM! Got in with a friend, he used Oak for the most part. got 20 1' very goood machines. But the Beaver is the tops for myself but well buy all 3 when i can!