For what ever its worth, count me in the traditional lecture camp. I learn best through independent study, but I like the structure of lecture-based programs. For me at least, having all the info up front and organized ... and just diving in and learning it, is much more satisfying. I can always explore more about a topic or talk with others on my own, or even sit in lecture as a passive review/overview of material.
I get frustrated in small group learning environments because it can be so low-yield. I am very often not interested at all in hearing a fellow student ramble about what he or she read up on/researched the night before (since I would prefer to just go read up on it myself). If I have the need or urge to work with other students in a group learning environment, there is always the option of joining or organizing study groups with classmates or meeting with other like-minded students to discuss topics over dinner or something. This is just me though, I can see how other people may do very well in the PBL environment. Different people learn in different ways.