BCG = Brilliant Cut Grinder / Grinders For Life. They're in a similar pricing bracket to the FM as far as grinders go. The medium plate works great for me in the UD, the fine is too fine, I wouldn't want to go any coarser than the medium, especially because I use the SS tips mostly and I find if its too coarse it doesn't load and seat as well. Too fine and it gets too restrictive, so medium works great here.
If you're looking for something that wont get gummed up, the BCG is what you want. It's turned through everything I've put into it without a problem and I have yet to clean it once. Literally trying to see how long I can let it go before it really requires a cleaning. They have a thread here too.
The Flower Mill is also pretty good at that because there arent any teeth to get sticky, but I haven't had enough time to truly put that to the test. In terms of plates on this one, I think they run a bit coarser than the BCG. I'm in between the finest and 2nd finest plate for them for the UD, experimenting with that now. looking like the 2nd finest option so far but we will see. It does seem to cut down on the dust because of the nature of milling vs grinding though.
Both of them always evacuate the grinding chamber without a problem.
But yeah it's a balance IMO, too fine, and my pulls get really restrictive really quickly, but too coarse and I have a hard time getting it to seat properly in the stem and I feel like the pulls are still off. Also I think the glass stems are more accepting of a coarser grind, so that loading issue I have with the SS tips doesn't really apply if you're only using glass, and you can errr on the coarser side.