Bulletproof, well-built, simple and fun machine (if you'll make Eric's modification for espresso).
Positive Product Points
The retro design is great fun. The lid seals well, and there seems to be little or no evaporative effect on the beans in storage. Jar holds exactly a pound of beans. Made Eric Francey's modification, and then fine-tuned the grind setting, and now get really excellent results.
Negative Product Points
Having to make a modification in order to get a good espresso grind. Minor clean up hassle (unless you leave the silver "flapper" lid up, which you'll only do once, since it then sprays ground coffee easily 8 feet with great effectiveness). Measuring jar that receives grounds is too small in diameter, and you're warned about putting it the dishwasher (markings wear off quickly.)
I like this machine a great deal. It's heavy, well made, easy to operate (one dial for grind setting with detents / stops) and an on off switch. As I said above, I like that the jar seals tightly, and holds a full pound of beans when empty. It doesn't clog, jam, or misbehave in some other fashion.
I made the simple modification that Eric Francey describes in his review, and then dialed in the right setting for my particular new machine. I wound up with a different number of clicks past the original factory setting than did Eric (fewer in my case) to get it to the optimal grind for my Zoka Organic Torloch beans, and Rancilio Silvia machine. I suspect that it will be different for any other combination. However, the results are incredibly consistent, giving me very reliable and repeatable results.
I stored away the glass jar they provided to receive the beans after grinding. Since it has no lid, I couldn't easily save any extra espresso I happened to grind. And it is too small in diameter to catch quite everything. A larger diameter (and shorter) Rubbermaid container with a tight-fitting lit catches nearly everything, including what I brush off after each use, and saves whatever I over-grind nicely.
This thing has a completely different look from the Silvia, but matches all of my wife's other red KitchenAid appliances. And she bought this as a gift for me (sure) before I bought the Silvia. The pair work together well, though. And as with everything else we have from KitchenAid, it is bullet-proof.
The Chefs Catalog experience has been good every time we've used them. chefscatalog.com.