The Gaggia MM grinder is the weak link between these 2. It does not have any gear reduction and runs REALLY fast. If it doesn't damage your beans, it will hurt your ears - arguably the loudest grinder ever built - AVOID!
Thank you Colin!
I need to buy a grinder for maximum 50$.
I know that 50$ is not enough for really good grinder, but you know, the money is never enough too.
Please give me an advice for the brand and model for me.