I would have to say NOOK by Barnes and Nobles is the best. They don't have as many app choices but there are a lot of books for better prices and they have a ton of more options than others.
Adobe Acrobat Reader is considered the best PDF Reader. Adobe provides Acrobat Reader free of charge and has different versions available for the desktop and mobile devices.
The best e-reader is a matter of opinion. The popular ones are: kindle and kobo. check this site for reviews: eBook-reader-review.toptenreviews.com.
The best replacement for Google Reader is going to depend on a person's taste. For example, the best alternative to Google Reader is Freedly. It is said to be very user friendly and incredibly flexible to the needs of the user.
Adobe PDF readers are generally free to download from the Adobe website. The best available reader is their latest release, the Adobe Reader XI (11.0.03).
It is not the lightest, nor does it have the best battery life, but many studies have shown, even with people who have other readers, that they think the iPad is the best reader.
Best Google reader desktop clients for reading Google reader RSS Feeds subscriptions .... They are really the best ones... http://sameerkhansblog.blogspot.com/2009/02/google-reader-rss-feed-desktop-clients.html
www.barnesandnoble.com/nook/gettingstarted/index.asp Barnes and Noble's Nook is the best selling ebook reader currently on the market.
With an interesting lead to bring the reader into the story.By asking a question to the reader.
The best Nook reader can probably be purchased at Barnes & Noble. This is their signature e-reader. There are at least three types of Nook readers: The Nook Simple Touch Reader, Nook 3G 1st Edition, and the Nook Color Wifi eBook EReader.
The Kindle is the number one best selling eBook reader. The Nook reader from Barnes & Noble also rated well along with the Kobo's E Reader. Kindle's many pleasing features have helped it to become the number one best selling eBook reader. They are available for purchase in the Electronics sections of your local store or online.
Weekly Reader and Highlights
Diffbot (http://www.diffbot.com)