I ate Supergods up, but I'm a fan. It needed a better edit than it got -- it can be repetitive, and I'm glad I won't have to read the word "lysergic" again anytime soon. And aside from the genuinely interesting memoir parts, there wasn't much that isn't already all over the web. I did like it, though.
Just finished Europe Central. Holy shit, William T. Vollman is amazing. I started the 33 1/3 book on Love's Forever Changes, but lost steam about 20 pages in. Now reading Solomon Volkov's possibly-faked memoir of Dmitri Shostakovich, Testimony.