Built really solid. Very little vibration and very quiet machine. Retention is very low based on my use so far and no issues with static. I am currently looking for a good dosing cup to mate with the machine as putting the portafilter with a funnel on it into the fork does not really work. Typically I just hold it for 12 seconds it takes to grind the 18oz I am typically using. Overall I am impressed with build quality and functionality of this grinder.