Hound - If you haven't read Neal Stephenson's books already, you really must. Start with Snow Crash, then go on to The Diamond Age. Since you are a seasoned sci-fi reader
I can recommend you Anathem. It is long, demanding, mindbending, and ultimately very rewarding. Cryptonomicon is brilliant, too, but it's hardly sci-fi - two storylines, one about Alan Turing, breaking the Enigma, etc and the other in 1990s, cryptography, building a data haven in a fictional little country.
William Gibson's earlier books (before All Tomorrow's Parties) are pretty good, too. Neuromancer, Idoru, and Mona Lisa Overdrive were pretty good, as I remember.
More recently, I have quite enjoyed Lock In by John Scalzi and Spares by Michael Marshall Smith, although they are nowhere near the caliber of Stephenson's books.
I don't have anything like Hyperion for you, unfortunately. If you know of books like it, let me know.
I have read about 8 Culture books by Ian M Banks and had no love for them, him, or that hippy dippy space opera universe where robots and humans hold hands and sing "Kumbaya" on all sorts of drugs they release from their brains 