Beautiful and smart.

Both kind have been chosen in the past. Proof: both kinds are still around. Probably both kind will be also chosen in the future. A nice, fun and also intelligent movie related to your question, that I'd like to suggest you is : Idiocracy (2006), directed by Mike Judge, with Luke Wilson and Maya Rudolph. My preferred choice is not really relevant, I think.

Hmm like what they've often say "Beauty is in the eye of the beholder". It's just a matter of how you manage or carry yourself to look smart and beautiful inside and outside.

I don't think there is a choice. What one person may be attracted to another person may not. A person's outer beauty may not be as great and maybe initially I won't think of trying to date that person however if their inner beauty is outstanding automatically they look better in the beholders eyes.