I am the founder of http://www.feedsapi.org and this might be an option for what you are trying to achieve. It is not a typical rss reader but more a full text RSS to email service, this feature should allow you to read and organize your RSS news from any email client and any device, it syncs with all platforms as well. Like you already said, such a service can't be free but the pricing is fair and comes with a free trial...feedback welcome, please let me know if it fits yous needs
That's actually very interesting! But, far too expensive for me. I would have to pay $348 per year to read the same stuff I read now for free with NetNewsWire + Google Reader.
Even though I don't actually read 15,000 articles a month, I definitely download that many to browse through.