I think the Kindle does not support expanding storage. I know I can add microSD card and an SD card to my Sony PRS-650 but I'm not sure that feature is available for the PRS-350 (the 5 inch screen version).
I don't have a Nook so I'm not sure how well that works.
Honestly, I've rarely met a person that was unhappy with their purchase. But again it depends on what you plan on reading and how you use your device.
The main reason I would not recommend Amazon's Kindle is because I'm unhappy with the way they remove books with gay/lesbian themes and last week they removed fantasy/erotica books that featured adult incest. (they also removed the books from the patron's archives for about a week until a lot of people complained) So for myself I do not want to give the company any money. But again that's my personal choice and well I already have a Sony so it doesn't hurt me to buy ebooks elsewhere.
Another thing many people do not mention is that many libraries do not support Mobi ebooks. So if you had planned on checking out ebooks at the library the Nook or Sony would be better options.
If you have the chance to go to best buy, I recommend heading over there they had the different models on display. I found the Nook was too bottom heavy and the Kindle, at the moment only the Sony feels like the weight is evenly distributed. If you do go to Best Buy, see if they have the newer Sony models. When I went about a month ago they still had the older Sony models out on display and that's not a fair comparison to the Kindle 3 they have out. The newer Sony 650 is VERY light and has sharp contrast.
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I don't have a Nook so I'm not sure how well that works.
Honestly, I've rarely met a person that was unhappy with their purchase. But again it depends on what you plan on reading and how you use your device.
The main reason I would not recommend Amazon's Kindle is because I'm unhappy with the way they remove books with gay/lesbian themes and last week they removed fantasy/erotica books that featured adult incest. (they also removed the books from the patron's archives for about a week until a lot of people complained) So for myself I do not want to give the company any money. But again that's my personal choice and well I already have a Sony so it doesn't hurt me to buy ebooks elsewhere.
Another thing many people do not mention is that many libraries do not support Mobi ebooks. So if you had planned on checking out ebooks at the library the Nook or Sony would be better options.
If you have the chance to go to best buy, I recommend heading over there they had the different models on display. I found the Nook was too bottom heavy and the Kindle, at the moment only the Sony feels like the weight is evenly distributed. If you do go to Best Buy, see if they have the newer Sony models. When I went about a month ago they still had the older Sony models out on display and that's not a fair comparison to the Kindle 3 they have out. The newer Sony 650 is VERY light and has sharp contrast.