Scoble has been really glad about using the new Google Reader because it allows the river style reading. A river of news is actually contrast to what a lot of feed readers offer – categorization. The news just flows, without separating by the source or the type.
I have been extremely happy with Akregator, and find all the online counterparts slow. I can read the news as a river in Akregator, and it allows very convenient shortcuts for navigation. River of news converts all the different feeds you have subscribed to into a giant feed. There is no need to change the types or feeds, so fewer clicks, quicker experience and better efficiency.