The two courses are exactly the same - same curriculum, same everything - so the only thing that matters is your personal learning style and what works best for your schedule. Some people prefer to be able to make eye contact with the instructor and sit in a real classroom. Some people prefer to take the class from the comfort of their own home or ask questions privately (online, you can send your questions only to the instructor - so the entire class doesn't have to hear).

You can sign up to sit in on a first class session for free, so you might want to test things out and see what you prefer!