Person from >>106348405 here. If you're looking for a good source for flatheads:
Most of the info I trust regarding flatheads that I don't own (although I own all the flatheads I mentioned above) comes from lurking the Flathead Sanctuary >dicksword group - https://nymzreviews.wordpress.com/flathead-sanctuary

I don't take everything that people in there say as gospel or agree with all their recommendations but they're pretty good for news of upcoming flatheads or impressions that you know aren't coming from a retarded shill career reviewer or some AI generated forum post on head-fi.

Discord sucks, but all I do is lurk so it's whatever. Also a good place to find deals on used flatheads.