I have a Chromium Crusher and for the money it's great. Forgetting about kief collection and loss of material in a grinder's teeth and screen for the moment, consider for the moment only consistency.
Last night I had a friend over. On my coffee table sat two vaporizers: the PD and the VB. In the center was a wooden bowl with finely bashed material from my mortar and pestle "system."
Rachelle, my friend, aside from turning me onto Portishead last night, used the VB and I used the PD. She wasn't interested in trying the PD - that's fine.
But I digress. Because the material was finely ground, more finely ground than we would experience with our Chromium Crushers, it held in place in the VB whip and there was no need to turn the unit on its side or even to raise it up from the back with a book. She got great hits consistently and many of them. From my end, the material filled into the PD tube perfectly, held in place, was the perfect consistency for smooth and reliable hits.
Interesting what you say, that at the end of the day you can't distinguish between the ground herb from a CC and a SC....