I discovered these books (and the author) entirely by accident - at an airport, back in 2009 - I think it was Matter. Was hooked, and then read the entire series (inasmuch as they're a series) over the next twelve months.

Banks was an author with a truly singular style. He is sorely missed.

If you liked Banks, I can recommend Alastair Reynolds's "Revelation Space" and "Poseidon's Children" series.