I put them all on tap. I have five taps. But, with that said, you can tell the beers that are good by the ones that your friends go back to for a second or third--or more likely too many to count. I haven't poured a beer down the drain in years because I'd rather drink them than pour them out. My friends are more choosy than I am.
However, I've had so many BMC drinking friends over the past few years start out drinking my kolsch and graduate very quickly to a variety of darker, stronger, and better tasting beers that I can barely keep up brewing enough to keep the taps flowing. Be careful what you wish for; before you know it you'll have more friends than you know what to do with. But, it's a good problem to have--too many friends, that is.