Consistent and rugged, Rocky is still the champ! The doserless avoids stale grounds and mess
Positive Product Points
Consistency and rugged, commercial quality is why Rocky costs almost twice as much as the Solis Maestro -- and I believe is worth it if you're pairing it with an espresso machine like Silvia or better. The portafiler holder is very stable and easy to remove.
Negative Product Points
Rocky has two switches, a "master" rocker that enables a second spring-loaded rocker switch. This requires that you hold the switch to keep the grinder going. Some grinds tend to hang up in the exit chute.
Consistency and rugged, commercial quality is why Rocky costs almost twice as much as the Solis Maestro -- and I believe is worth it if you're pairing it with an espresso machine like Silvia or better.
I have noticed that the doserless "dribbles" grinds rather easily. Move it or give it the slightest nudge after use and -- kerplunk! -- a 1/2 tsp of grinds on the nice stainless steel base and your countertop. I would put a tray below it to catch these errant droppings, but that would get in the way of the grind switch. Oh well, grinding coffee is rarely a neat affair. More and more, I use a cup instead of dispensing directly into the portafilter.
I chose the doserless because I make only one or two espressos a day and I didn't want to deal with potentially stale grinds left in a doser. The downside is that when you want to make several, you must stand there and hold the grind rocker switch down since there is no timer.
The manufacturer's instructions are nearly useless. They don't suggest that you clean the burrs from time-to-time, just wipe down the outside and the hopper. I shudder to think that the insides would look after a year of daily use. Fortunately, the article "How to Clean a Rocky" walks you through the steps. If you remove the finger guard (three screws), a quick vacuum with a shop vac will pull out most of the grinds between more through cleanings.
Hint: If you want to do successive pulls, short kid's cups work great (pictured here). Of course, this assumes that you've modified it for continuous grinding.
I've dealt with Whole Latte Love over the phone a few times, and always felt a little rushed. Their tech guru (Todd) is great, but their sales staff don't seem overly knowledgeable about finer points of the product. You will get better information, by far, from this site.
Three Month Followup
As part of upgrading my espresso machine, I also upgraded grinders from Rocky to Mazzer Mini. Rocky has a good resale value and I still recommend it highly. We did a side-by-side comparison of Rocky and Mazzer that also may be of interest; see Rematch of Rocky versus Mazzer Mini.