Been using the Attensa Outlook plugin for my RSS reading and so far so good. My very first impression is that importing an OPML file could be a lot more obvious but once I found the function eveything went fine. My second impression was that this thing is frickin fast, which gets to the one thing that really bums me out about Onfolio, the feed downloading performance through a proxy is obnoxiously slow and building the channel page could be a lot faster as well. It's also cool that Attensa is setup to deal with podcast enclosures.
The Attensa RSS Network intelligently delivers relevant, up-to-the-minute information to people on any device they choose.