I owned a coffee house in the mountains above Santa Cruz California and we tested and sold a number of different grinders over the years. When I sold that shop, I continued to buy and sell espresso equipment on Craigslist and eBay, mostly higher-end and commercial units. Many purchases were to test and evaluate, then sell, the equipment I bought.
Until recently, I was using a Pasquini Livia espresso machine paired with a Nemox Lux doserless grinder. The Lux was OK but it was a mess to use. Coffee grounds all over the place. I have since replaced the Livia with a commercial Nuevo Simonelli Mac Digit.

When I came accross the new Breville and read that it had an insert for a 58mm commercial portafilter, I was very interested. I had been looking at more expensive commercial grinders in the $400-$600 range but just wasn't ready to spend that kind of money so I bought the Breville.

This is simply one amazing grinder. Evenly ground beans with no clumping, a fine enough grind to use with my commercial Nuevo Simonelli rotary-vane pump machine and not one stray coffee ground after grinding directly into the portafilter. Another nice feature is being able to remove the bean hopper without having to empty the beans. This way I can have another hopper filled with decaf and can switch from regular to decaf beans in a few seconds. No more having to empty a bean hopper and replacing the regular beans with decaf beans. Very nice!!

I would recommend this grinder for the most hard-core coffee afficianados out there. You will not be dissappointed!