I just got back from one. most everything was below my level of learning, so it was frustrating most of the time re-listening to baby food, when I have a ravenous desire for meat.
best part was re-meeting a lot of the folks I've met a meetups in the hallways. not the talks. you did get some technical people there who usually don't show up to meetups too.
still not worth the price of admission imo.