I am currently operating 15 vending machines. I started with the VZ550s then purchased a few VZ350s and more recently 3 x YZ250s in a standard configuration. Everyone wants a big site, but it is hard to find new big sites but there are 100 times more, smaller vending machines sites which easily accommodate the smaller and cheaper YZ250. It can do everything the big machines can but it will fit where the larger machines cannot and is till economical to operate on a smaller site. The key is to have the vending machine in a highly visible location and because of the YZ250 size it is easier to locate in that highly visible spot plus the smaller machine is more user-friendly