I've noticed that the dangling one has surfaced with a lot of vendors lately. Maybe it is my imagination but it seems like this is a newer style. I like both but for different reasons but I think someone's earlier point about the dangling one not having the flips is a real positive. I have a DBTY bracelet and it annoys me how much the diamond flips so possibly for a necklace, the one with the dangles may have more presence (since the diamonds won't flip). I think too with the dangling piece, it's a little more unique. If I see people wearing DBTY, it's either the single diamond or station (floating), so this would be something classic yet not as mainstream.
