What Writers Conferences Are Best?

The San Francisco Writers Conference is this weekend.  I went last year and was disappointed, so I didn’t attend this year.  We all want to get the best bang for the buck when attending a conference.  So how can we get some objective feedback on which conferences are best?  I did a little research and found an interesting conference review website where writers share their experiences at various conferences all over the country.  And who better to review a conference than a writer attendee?   I’ll definitely be checking this site before attending another writers conference.