I'm jailbreaking both of them, sell one, see what cool and interesting things can happen with the other. I can't jailbreak my iPhone 4, I'm starting to use some Apples fledgling business services, and can't risk any problems.
P.S.- Anyone can save their childish Apple bashing reply this post. I'm not asking for it, so don't offer it. If you don't use their business services, you don't know anything anyway. On the other hand, if you are also currently being courted by their business services division, and know the secret word, pm me so we can share notes.