Is sony ereader better than kindle?

Amazon's Kindle and Sony's ebook readers are among the best ebook reader brands today. Both brands have many similar qualities such as, similar display technology, similar microprocessors, internal and external storage modes, memory stick, E link display. Their batteries can last for a week if used only for reading. However they do have their differences which include: Amazon sells only two ebook readers as compared to Sony's three current generation ebook readers. Sony introduced two touch screen versions; the Daily Edition and Touch Edition, while Kindle still works on buttons like those of a cell phone. Kindle's screen is much larger than Sony's though it's not as stylish as Sony's ebook reader. The Kindle does not read PDF documents but it does read Mobipocket, Sony however, has its own inbuilt PDF reader. The Kindle comes with shock protection unlike Sonys ebook reader.