I do not read Pure Sci Fi books too often mainly Koontz/Herbert/King but, when told to get the Asimov series, I made the leap and found I could not put them down and ended up reading one after the other. These are excellent books and keep you interested all the way through the lifetime of the foundation series. I would recommed these to anyone who likes to read well written and gripping books. I have tried other since but no other author can keep me interested as Asimov did. I suppose it is dependent upon individual tastes and these are my cup of tea. Seller was excellent providing great service and delivery.