You don't have to just take my word for it...
So we just got back from SOURCE Boston. It was by far the best conference I have ever been to from pretty much all perspectives.
Pretty much all the talks were great, I found myself sitting in talks and wishing I had a second me (I wish that quite frequently actually) so I could sit in one of the other talks. Now this happens often a other cons, but this was for the whole con schedule. The SOURCE advisory board picked great talks. The location of the hotel was great, it wasn't too crowded, and the SOURCE organizers totally took care of the speakers with free food and booze (I felt very well taken care of), the securitytwits with free food and booze, and the con-goers with free food and for pay booze but threw a really nice party. It was also extremely cool to get to interact with some of the Original Gangster l0pht guys and all the other con attendees especially the Attack Research guys, the NYSEC guys, and many many others.
I had such a good time that I'm currently trying to scheme a way to pull off FRHACK, BruCon and SOURCE Barcelona in September.
Oh and for shameless self promotion Chris Wysopal gave our client-side talk a nice review: