Reviews on new items may not show long range reliability but that being said.  For a lower cost burr grinder 
I am very happy with this so far. The glass jar and rubberized top makes it very clean.  I use this for espresso and the grind is fine enough for my machine. There is a 20 second grind time with a 5 minute wait time and that's fine with me. The size is smaller and perfect for me.
If the grind was a little slower it would be perfect.  It's still slower than all but one comparably priced machines. 
One minus that may hurt in reliability and durability in time is the burr housings are plastic.  But, again it's not a 300 dollar grinder. Still wish they were metal.