Hi bigjdubb! , no I don't think there are any other threads, this might be it!
There's a few other places out there , vinyl engine is one I'm a member at! ... https://www.vinylengine.com
A couple of others spring to mind ... the stevehoffman forum ... https://www.stevehoffman.tv
... the hifiwigwam ... https://www.hifiwigwam.com
There's plenty more including (for more home AV stuff) , the AVforum ... https://www.avforums.com
... there's also facebook groups too!
When it comes to buying I use good old ebay or discogs for second hand stuff , or if you have a local record shop it makes sense to support them if you can!
Meanwhile, new in this last week ... a Division Bell re-issue ...