I am an avid reader and really would like to buy an ebook reader, because it will make things easier, because i like 300+ page books. and they can be a pain to lug around. so which is the best ereader out there?

I am thinking about buying one because I have loads of PDF books on my computer but reading them makes my eyes sore and I dont like buying real books because of shelf space. So I am thinking about getting an ebook reader. First of all are they any good and secondly what is the [...]