I made the very rational decision to buy a Slayer. We drink maybe five cups of coffee per day between us. So I guess the rational part of that statement is subject to debate. But then I looked at my Eureka Mignon grinder and thought - weak link. So I decided to upgrade to something that would complement the Slayer - thus the Mahlkonig Peak.

I've rated it 5 stars because the grind quality is really impressive. There's definitely a taste upgrade. The coffee is sweeter, more consistent from cup to cup, and when I set it at its coarsest setting and brewed a pot of drip for my Moccomaster - which was still too fine a grind but I used a paper filter - it was really delicious. But my 5 star rating comes with caveats.

The grinder is super quiet. I'm not waking anyone up with this grinder; even at 4am. But the fan is irritatingly noisy. It kicks on in about 2 minutes so you can shut the grinder off between uses though, to avoid that.

The grinder settings are not as precise as a worm gear. But they're good enough.

The range of grinds is not as wide as I expected. It doesn't get to Turkish, which is a nice option on a Slayer; nor does it get to drip. But it covers a wide enough range.

And while the build quality is very impressive, the portafilter setup looks a little cheap to me. I expected it to look more refined. Instead it looks like a decent grade of sheet metal.

Is it worth $3500? I don't regret my purchase. To the contrary. Every day I like it better. But my Eureka Mignon sure looks like a value by comparison. While everyone says that investing in a grinder is the most cost-effective way to improve your coffee. I'd say your 90% of the way there with the Eureka. Getting that extra 9% is expensive.

Very well built, easy to use. The grind is as fluffy as can be, and very consistent. Very happy with my purchase.

Fantastic grinder. Very, very consistent grind and anyone who says buy the best espresso machine you can afford and then a budget grinder will do is wrong. The difference between this grinder and one for $250 or even $1500 is very noticeable in the final drink quality. Spend the money on the grinder for the biggest difference in your cup. Pricy yes, but as they say, you get what you pay for and in this case it holds very true. Very well built and performs like a champ!