Here's a few inputs from my humble point of view: - missed comments about kindle and kobo. If you care that much for offline reading you should really consider either. from my brief testing today, I think instapaper is what works best with kindle (although still a bit far from what I would hope). - couldn't care less about rss, reeder or all those design little details such as fonts. above all, I care for content and your pros & cons end up being too distractive to me. - do take a look at the same comparison lifehacker did: http://lifehacker.com/5894995/bookmark-and-read-later-apps-compared-read-it-later-vs-instapaper-vs-readability - cheers! ;P