Originally Posted by Cdesja5
Stanza,megareader, Bluefire are some of the more popular reading apps. Although Stanza is no longer supported it does work with iOS 5 and it is the one I prefer (until I no longer have any choice...)
Megareader is a very poor choice. It doesn't render properly. The best one is Bluefire Reader. It's based on ADE and thus, will work.