My RSS reader of choice was NetNewsWire (largely because it's free and I use their desktop app). It is supposed to be updated for Google Reader any day now. Then someone told me MobileRSS ($2.99) is free for today only. I've used MobileRSS for only few hours, but it seems to be superior to NetNewsWire. It fully replicates Google Reader web interface, but much faster. It has few interesting features like Instapaper, although it is missing few key features like ability to subscribe/unsubscribe feed, removing/hiding read messages, and landscape mode.