Got my GFL grinder yesterday (ordered on Apr 14).
Already put it through some operation, grinding up a bit less than a half-ounce of various strains in various stages of dryness. The grinder easily handled anything I threw at it.
Likes: Very smooth operation, takes little effort to turn. Nicely machined and anodized. I was very impressed that my herb didn't stick to it like it does my GR8TR. And I was somewhat surprised that after grinding, there is little to no herb left floating around in the top chamber; everything is cleanly ground and pushed to the lower chamber. And I love the 3-piece, no-thread design; I have no desire to screen / sift my trichomes and there are no threads to get gummed up. The grinder is easy to clean with just soap, water, and a toothbrush.
Dislikes: It feels a little small for my hands. The top feels a little 'squat' and I have a bit of difficulty grasping and twisting it correctly. Perhaps if the top was about a 1/8" taller or maybe if it had ridges or something, I might be able to grip it more comfortably.
I'm very happy with my purchase. I'm definitely putting my GR8TR away while my new GFL grinder takes over for all my grinding needs going forward.