I'm not sure any one site is going to address all of the particular interests of an enthusiast. In audio, many of the sites, including this one, are gear-centric (A-gon, for obvious reasons, being a 'trading post' for used hi-fi gear). Music sites, like S Hoffman are less gear-centric, and more about particular releases, but even then, there are limits to how many times you can discuss the 'best pressing' of Led Zeppelin or whatever. (My view- buy 'em all, you decide). :)
Fremer still carries the torch, even though I don't always come out the way he does- I guess since he is a bit of a character, he provokes different reactions from different people. (I like reading him).
I love the fact that people like Albert and Mike L (who seems to have decided to listen rather than post), among a number of others here, try to push the envelope and constantly reassess and try to improve their sonic results.
Ultimately, it's a personal question; i have found that over the years, my focus has changed, and changed again, sometimes I am on a mission w/ respect to upgrades, and other times, I've gone through periods where I didn't even bother with serious audio.
