I call foul. Nose Art is cheating.This is not a competition.
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The Staggerwing is pretty, but like a softball player. Kinda thick around the middle.
Beaver is like a powerlifter. Sturdy and practical, but not necessarily sexy.
The 195 is just pure curves and perfect proportions.
Since you failed to specify a number of engines, I'll also nominate the B17 as runner-up
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Yeah the Lionheart is almost so modern/sleek that it can look odd from certain angles. I honestly think if they'd left the strut in place from the Staggerwing (despite the obvious drag penalty) it would have completed the look a bit more. It resembles what it would look like if a Spartan Executive and Beech Staggerwing had a baby.My brain can't decide if that looks sleek and sexy or mutated and awkward...