Jay,
I like all of them and have told people that in many ways, I do like CB better than much of what is at Bandon.
That said, and its hard to put into words exactly, I think you will find the CB design with bunker placements and what not to be designed for the US Open it will hold and thus just a bit more of a "standard course on a different site". The 4 courses at Bandon appear more natural, and certainly among the four of them, have a lot more non standard features. At the very least, each course is a pretty good example of the various gca's philosphies, and you can tell the difference between the CC, TD and RTJ philosophies.
While I don't know you that well, I know your preferences a bit, and suspect you might be one of the people who prefer BD over CB. Of course, with four completely different courses, you sure have 4X chance of finding something you like better.