Just in case you were not aware...World Vital Records is having a special offer through October 8th.
This current offer at World Vital Records includes two years of membership and a copy of RootsMagic for $49.95. World Vital Records has added some census images and is working on adding more of these materials to their site--indexes are forthcoming as well. They are adding a variety of databases to their site and their data may complement nicely other databases to which you subscribe or those to which you have access at your local library.
Those unaware of the materials World Vital Records offers can get a listing all databases on their site.