Starting in book one called, Hidden Empire, the series is at least six books long now with no signs of finishing yet.
If you like large series with lots of characters, political intrigue, dangerous actions and general skulduggery, then this is what you are after. Anderson likes to work on a large stage, and the Saga of the Seven Suns is a LARGE stage. Be prepared to remember lots of character names, and places.
Overall though I do like these books and can say fans of science fiction should enjoy them as well.