I actually bought Diaspora and Axiomatic while still within the first few chapters of Permutation City because I liked it so much. That was on the tail end of a sci-fi binge though, and I haven't read Diaspora yet, or much sci-fi since. Next time I feel like it though, I know I've got a very good backlog waiting for me.

Here's hoping I don't want to finish his other novels either :)