I also have had the heihox one for over a year now. My only gripe with it is the wooden ball is attached magnetically, and the magnet has weakened over time where the ball will go flying off if it gets bumped. It doesn't affect the daily use, but you just have to be a little more cognizant about it. Also I do not brew espresso so I don't know if it could go that fine, but for pour-over, aero press, and French press it does a pretty kick ass job.