This is the main grinder we used in the CoffeeGeek Lab, and the one I still use today in my home, paired with a Speedster espresso machine. It's the Compak K10 Conic grinder, and it is awesome in all its manual glory.
This is a conical burr (68mm, or 6.8cm across) grinder that spins at very low RPMS (under 350) but still provides a very fast grinding rate of about 5 seconds per 18.5 grams ground. It weighs in at almost 38 pounds, and has a lot of advanced features including an auto brake system (the burrs completely stop within a second after you turn it off).
But the Compak K10 is also a very manual grinder. It is operated by a simple (and very robust, clickity clack) on/off switch. No timers. No auto dosers. No electronic LED readouts. It's you, timing your grind time. It's you, pulling whackity whack on the doser lever. It's you, being hands on, or as hands on as you can get, with a superb espresso grinder.
The doser chamber is quite well made and leaves very few residual grounds once you sweep it clean with the doser lever. Like all grinders of this type, a fair amount of grounds are left in the channel between the grinding cones and the doser, but it is what it is. The grinder is fast, is very quiet, and is designed for high volume use. It is also tall, and definitely won't fit under kitchen cabinets. But it's a favourite at CoffeeGeek and would be well suited for your man cave espresso bar at home (or as a grinder in a high volume cafe).
Product Link (Cup and Brew, USA)