This is a really tough question.
I voted for the current lineup because I love it! The guys are better musically and vocally,and Dangler is the best thing that has happened to this band, well that and Jordan coming back too! I feel like these guys can do just about whatever they want musically and could pull it off. I, like everybody else, wish there were more shows but we take what we can get. More shows would allow them to delve deeper into the repertoire and add more songs.
That all being said, I do love every incarnation of the band. I listen to them all depending on my mood. PB is the classic and is the genesis of this incredible thing. The trio was so tight and nimble and could turn corners like nothing. The lineup with Matt and Ron was really just starting to flex its wings before the change to Chris. Now, I feel like that lineup, with Matt and Chris, really put a different twist to the sound and the jams. Those four put together some really amazing moments.
I just love whats happening now. If I could vote for them all, I would.