Some of the relevant subreddits have decent discussions from time to time. The grandfather is /r/networking, but if you look at its sidebar, there's a long list

Some of the relevant subreddits have decent discussions from time to time. The grandfather is /r/networking, but if you look at its sidebar, there's a long list of other subreddits for more specific subjects and individual brands. Stick to the subs for professionals rather than minor home network issues and you'll find quite a few knowledgeable people and plenty of anecdotes both good and bad about different brands etc.