Welcome CBH123! Please consider adding a signature so that we'll know a bit more about you and your coach.
This forum is about three years old and has a substantial and growing amount of activity and expertise. It also offers a mobile-friendly experience with easy photo/video posting. GMCnet, by comparison, is bare-boned but has a long history and many knowledgeable GMC'ers. There is plenty of cross-pollination (myself included) between the forums. When I'm doing research, I will often Google "search GMCnet", which leads me to the best search engine for mining the voluminous amount of info stored there (or one can just bookmark it:
https://groups.google.com/g/gmcnet-archive).