Regular helicopters make more sense to me. They're already used extensively with offshore platforms, so why invent the wheel? The jet fuel they burn is a pittance compared to the hydrocarbons being burned by the rockets. And they have a much better carrying capacity; a Sikorsky S-92 can carry 19 passengers in one trip. Electric helicopters could do what, two or three per trip? Maybe a few more with future battery tech, but I don't think conventional helicopters will be phased out anytime soon.