Finished The Currents of Space -- a first reading. In reading a lot of classic Asimov for the first time recently, as well as revisiting things I read when I was a youngster, I've been struck by how Asimov often seems to be using elements that I associate mystery fiction. In Currents, for example, you get the climactic scene in which "all the suspects" are gathered in one room (this time, with holograms), leading to exposure of the person who did the criminal deed.
This completes my first reading of his Galactic Empire trilogy. I'd probably assign 3/5 to each book. Next will probably be The End of Eternity.