Originally Posted by James_Wilde
Buy one that handles epub, Speedlever, and d/l Kindle for <your OS> and Calibre. Then you can buy epub from anywhere, or if you can only get it in mobi format from Amazon, you can rip off the drm and use Calibre to convert it to epub (if your machine doesn't also handle mobi, which few seem to).
If you were prepared to and knew how to circumvent the copy protection (which is illegal in several countries), you would be better off buying the ereader that suits you best and then converting everything you buy/acquire to the format that it wants. Things like DRM are only a problem for honest law abiding customers.