This is the third kitchen aid stainless steel coffee grinder I have bought but the first one with the smaller spice grinder containers. I have mostly used it to grind spices . Works quite well though a little hard to get a fine grind on some spices. 

Pros: stainless, large size main container, can be cleaned in the dishwasher 
Cons: The front plastic piece breaks easily, both prior grinders broke within a few months of use .