If you like Banks you might consider checking out the other two members of the "Scottish Clique", Ken Macleod and Charles Stross. Both write some really good stuff.

Other new good hard SF writers might be Cory Doctorow, Michael Chabon, Rachel Swirsky, Sara Genge, Geoffrey Landis, Elizabeth Bear, Ted Chiang, Paolo Bacigalupi, Aliette de Bodard, Mary Robinette Kowal, Charlie Jane Anders, Felicity Shoulders, and Ian Tregillis. I haven't read them all, but they're all at least on my reading list for good hard SF due to recommendations from friends I trust.

And I'll second the Alistair Reynolds recommendation too.