I love the Epilogues and consider them the best part of Homestuck. They're very dark and weird and more explicitly adult in theme, and very meta, but I love them. Meat more than Candy, but Candy I find very valuable to the overall narrative.

HS2 is pretty good, but it has some cut corners in art and overall problems in direction I disagree with, as well as the comic becoming quite bad around chapters 8-12 or so.

Beyond Canon is awesome and I love it, I think it has great art and I'm really interested to see the direction it goes, as well as having some really deep insights into the main cast, like with Vriska and Jade. I think it's been consistently excellent. The only reason I don't put it above the Epilogues is that, as of now, there's simply more to The Epilogues.