I've had it for a few days. It's a proper grinder with ceramic plates that grind and not fake blades. The espresso machine (Delonghi 685) has just arrived now. Previously, I had the Gruppe CM 4677, which anyone who has it or has seen the reviews knows that it produces an excessively strong and fast flow, resulting in the required amount being extracted in 6-7 seconds, which is disastrous. With the grinder, you can adjust the grind size that the coffee maker and each coffee require, and generally experiment until you find the right one.
As for the grinder... Japanese construction, which means a lot in terms of quality. From the box, you can tell that it is a serious build. What concerned me was whether it could grind fine enough for espresso. In the end, I don't even set it to the first settings because the water doesn't pass through. Even the Gruppe needs several settings to extract. At the finer grind settings, not a drop comes out. With the Delonghi, I go up to 4-7 settings; otherwise, it can't brew the coffee, depending on the variety of course, and I also have a bottomless portafilter. Its grind is perfectly uniform.
In conclusion, sturdy construction, there is a video on YouTube to see its operation, and you can grind from espresso (I will also try it for Greek coffee because it makes it almost powder) to French press without any problem.
The only negative, let's say, is that there isn't a specific scale to ensure that you grind to the same size every time. You just unscrew it, and the more you unscrew, the coarser the grind becomes. However, each turn makes a characteristic "click" sound, so you know what setting you're on. Also, if you find the setting that works for your coffee, you don't change it.
I will return after a while when I have a better picture.

Tip: when I get bored of grinding, I use an electric screwdriver without any problem. I've been doing it for 2 months now, and it hasn't suffered the slightest damage. Don't do it at an excessively fast speed because it "burns" the coffee.
- Also, the size is very convenient as it fits perfectly inside the portafilter (I believe intentionally and not by chance) without any losses or needing the related 'funnel.'

Update 10 months later: everything is perfect, the grinder is of amazing quality and hasn't suffered anything. I never tried to grind Greek coffee, but I don't think it's a good idea.

Update about 2.5 - 3 years later: It hasn't suffered anything. It's like new. (I make 2 coffees every day.)