Good lookers
Well, what about the Canberra (before the odd job they did to make the B.8)? Clean, businesslike and very sleek ... and for "sleeker" there's the B-57 US-built variant.
Another business-like machine I find very attractive is the Sukhoi SU-24(?) Frogfoot, which again is in the unglamorous "mud-plugging" game.
Talking of mudpluggers, there's the fantastic Hawker Tempest whose mighty Sabre I used to hear when on Armament Practice camp at Sylt in 2 TAF. The mainly Polish target tug pilots used to demonstarte whenever they could that it would beat any jet fighter of the day up to 15,000 feet ...