One of the great things about going to camps is getting exposed to new technologies and to what the others are using. I have never been to a camp where I don't walk away with some new tool for my toolbelt. Whether it's perfomance, coding, front end or backend tips and tricks, there is always something new to be learned at camps, which is why I am always motivated to go.
In terms of maturity, the current version of Bootsrap is 2.2.2 while Foundation is currently at 3.2. In terms of features they are comparable. While they are direct competitors, they share a significant number of features. I won't go into details here, but here's a nice little blurb comparing Twitter's Bootstrap to Zurb's Foundation. http://designshack.net/articles/css/framework-fight-zurb-foundation-vs-twitter-bootstrap/
Check it out and tell me what you think @rmonteroo.