I love spices, but in my tiny condo and condo kitchen, space is at a premium.  I like that I dont' have to go digging in a cabinet when I'm cooking.  I just lift off the spice needed, use it and replace it.  It's one of the first things people see when entering the kitchen, so it's beautiful design is a real plus. 

Pros: Easy to mount, and the spices stay securely in place.
Cons: I would love if it had had four levels.  I use a lot of spices.