http://www.newsgator.com/Individuals/NetNewsWire/
I didn't go into great detail about your specific needs, so it might not be a good fit. Hopefully it works out for you.
On a slightly unrelated note, I saw this picture and thought of Funkmasterr.


He said it does both, and that it handles binaries really well. /shrugWinnow wrote:That looks like it's for RSS news feeds, not the usenet.
I used to feel the same as you. Sometimes I still do to a certain degree. Best usage example I can give you is this...Ashur wrote:I never understood the attraction of RSS feeds and wtf you'd actually fire up a client to get them... don't web browsers get you the same value?