At the time I bought it, Good Reader's advantages where: * a full file manager, with folders; * various ways to get files on and off: a built in web server to

At the time I bought it, Good Reader's advantages where: * a full file manager, with folders; * various ways to get files on and off: a built in web server to upload files, good dropbox integration; * the ability to crop pdf pages to just the text to get rid of margins so your ipad isn't displaying an inch of whitespace next to the text. Also the ability to set different crop sizes/locations for even and odd pages. * bookmarks, plus the ability to email them to yourself * tabbed files, including the ability to open a single file more than once so you can easily switch back and forth between different locations I haven't kept up with Adobe's Reader, but it has 3 stars while goodreader costs more and continues to get glowing reviews.