[ Oh, he knew the answer to that one because he did choose: immortality. However, here he was Dorian Gray: the eccentric banker, not Dorian Gray: immortal playboy of Wildean fame. So, once again, he swapped back to lying. ]

If I had to pick...I won't lie, healing factor's pretty good. But if I had to pick, I'd go with teleportation. It'd certainly take the time out of travel, at least.