I actually don't need the long lasting effect, but the short onset is definitely a big plus because I'm a bit of a spontaneous punter (due to time restraint) so the quick acting effect allows me to manage my punting schedule a bit better, let's say I just had a big lunch/dinner, for V I need to wait for at least an hour to take it, and then wait for another hour before my punt, that's like 2 hours total.