Good choice. You have to wonder if MS have made note of the good press Sony have gotten since they added free games to Playstation Plus and will do a similar thing for Gold next gen.
Even if you dont think you will get around to playing a game just make sure you start the download of all the free ones that come up then cancel them. Then after their month is over you will still always be able to get them for free as long as your PS+ subscription is current.