Britannia would really be my 1st choice, a classic turboprop, sleek, elegant, looks fit for purpose. My 2nd really would be the VC10, could have been a contender in the 707/DC8 market but came too late and was straightjacketed by BOAC specs, (as was the Trident by BEA). So hedging my bets I put the 747 100/200 at the top of my list as it seems to be the favourite here.