NewsFire

NewsFire on Flickr

Well I've changed my RSS/Feed reader software. NewsFire is a really nice all-round app. It's fast, it's easy to use, and it looks great. It has lots of useful features, and no 'fancy-but-unnecessary' features that end up complicating the whole thing.
In my opinion, if you need an RSS reader, use this. It's only $18.99 (~£10.50)!