If someone is a coffee geek or wants a grinder for long years I highly recommend Comandante C40 MK3.
+ High-Nitrogen Stainless Steel Burrs
+ 40g Capacity
+ 2 jars (one dark and one clear) with lids
+ All plastic parts are made of Tritan BPA-free plastic.
+ Very good grinding quality.
- Price, but I think for this quality it is adequate.