How many RSS feeds is enough?

That's a question I always wonder about and never seem to know the answer to. I'm subscribed to around 50 different feeds on the basis that it'll guarantee something worth reading each day, leaving it up to me to wade through things that don't interest me to get to the good stuff. Some of those feeds will only provide new content every two or three days, some will cough up ten or twelve articles per day. Since no technology is yet good enough at sorting the wheat from the chaff, it still leaves a burden on me to find needles in my RSS haystack.

Maybe 50 is too many, then. Or is it too few? Should I saturate myself with RSS feeds from every blog I've ever thought looked worthwhile, and just allow myself ten minutes to pick my way down a list of articles each day, picking out the quality? Or should I accept that some good articles will sink to the bottom, and just pick up the top articles in my RSS reader whenever I get the chance? Or should I only have 10 or 15 feeds, so that I never miss a thing from sites I know I'll love? But can you think of a site whose posts you know - one hundred per cent - you'll read each time? There aren't that many. I personally would rather pick and choose from a wide variety than rely on a shortlist to constantly come good for me. The alternative is to sit through the bland stuff in the hope that it'll expand my knowledge if nothing else, but that seems hardly the point of RSS.

So, if anyone else reads this (presuming you haven't skipped over it in your RSS reader...), I want to know how many, if any, RSS feeds you're subscribed to. Why that number, and what's the theory behind the subscriptions you have? What drives you to subscribe to something, is it one very good post, a series of consistently good articles, or just the topic areas under discussion there? Answers on a postcard, or in the comments, please.