Call me odd, but, I like the second one. I like the flag on the tip of the tail and I think that gold(ish?) underside looks unique. Now, if there were logos on the engines...
The first one looks very nautical to me (i'm thinking ocean liner); The third one looks too dark, I find; And, the last one reminds me of a Killer Whale. (gosh, what's with me and killer whales today???)
My two cents
Nevermind political correctness - Envision using your turn signals!