This book is well-written. Egan's prose is simultaneously quick-reading and well-crafted. Descriptions leap out of the page, and it's always incredibly clear what is going on.
Beyond that, I'm not sure what the point of this book is. A bunch of things happen, then they fall apart in a nihilistic version of... what, exactly? The events and characters are a bit too glamorous to be real, and there's certainly no moral here. The book reads like it has a Point To Be Made, but I certainly can't find it.