I'm a huge fan of Daemon and Freedom(tm) by Daniel Suarez. I guess you can call it a 'technology thriller', with some amazing ideas and impressions of our society. His most recent book, Kill Decision, is along similar lines and also great.

I love reading actual sci-fi too, and was most impressed by the Lost Fleet series by Jack Campbell. Can absolutely recommend those.

Note: I didn't come to these titles myself, they were recommended by Steve Gibson from the 'Security Now' podcast. I couldn't agree more with his taste.