Have you read Peter Hamilton? Specifically, the Commonwealth Saga.
Banks is good, but I find his universes are to be sketchy and sometimes fairly shallow and not well-thought through (e.g. the one in the Algebraist). Hamilton is as creative as Banks, when it comes to the concepts, but he really delivers on the depth and complexity of the story lines and the actual execution. If you haven't read him, do it. If you have, I'd be curious to hear how you compare him to Banks.