Yeah, my old housemate had/has a mothership fab egg that he paid at least $1300 for, possibly more. I hit that thing all the time for nearly 2 years, so when I saw the CCG eggs I pulled the trigger immediately. Couldn't be more happy with the function on mine. I have one slightly wonky one with the pinholes that still functions great, and a really well made one with the slits (sent as a $1 replacement) that functions even better.
Honestly the only difference I notice in the function between my housemate's mothership and my knockoff is that my knockoff doesn't make the high pitched whistle that his does when being hit. Personally, I prefer a quieter piece, so I'm ecstatic about the knockoff's quality. I'm not using a honey bucket (yet) like he was, just a normal flower bowl, so that may contribute to the difference in sound.