So.... downside: books are more expensive, no support for the Kindle, "yet another eReader"(TM) for all my devices, minimal support for common formats, blah bla

So.... downside: books are more expensive, no support for the Kindle, "yet another eReader"(TM) for all my devices, minimal support for common formats, blah blah upside: it syncs where you are between all your devices! am I missing something here?