Our podcast interview with Huckabee can be found here. I found him quite straightforward and likable, notwithstanding our disagreements on social issues. We haven't interviewed Rudy yet, but we'd like to.
UPDATE: Rob Port says that conservatives shouldn't back Huckabee because he's a nanny-stater. Yep. That's why libertarians don't, too.
More nanny-state related criticism of Huckabee can be found here: "There’s little doubt that Huckabee is a 'big government' guy when it comes to taxes."