I don't use a browser based RSS reader. I've tried a ton and the one I like best is MyYahoo. Almost embarrassed to admit that for some reason. But the reason I like it over all the others is that I scan a TON of feeds everyday and it's the easiest, fastest way for me to get the job done, because it lists all my feeds in row instead of having to click to read each feed separately like some of the readers are.
Here's a screenshot I just grabbed, showing a small section,
so you can see how clean it is and how easy it is to scan.
I use the OLD format. Don't like the new one. You can set how many entries you want to show from each feed or date range. Easily move and re-order feeds.