I'm gunna recommend The Best American Short Stories series. Every year they pick some hot shot author to edit together a collection of the best short stories a long with a blurb and some information about the authors. These are probably going to be hard to find as an ebook but, really, you can look at the tables of contents on amazon.com and then find a lot of these for free on the web. Just place them into whatever document or file that your ereader likes to play with and you're all set.
