Fantastic book with the kind of pacing I love - slow, richly detailed, beautifully characterised. Other authors might have written it in 1/3 of the space, and for me at least, it would be much poorer for it.
This is a proper, weird, alienating, disturbing but ultimately hopeful and fulfilling hard Sci-Fi. What's so remarkable about it is how your attitude towards the different characters will subtly shift throughout, they are all beautifully beleivable shades of grey.