K Visa Whats faster, marriage outside or inside of U.S.?

[Richard01]

I'm trying to bring my fiance to the U.S. But I'm not sure which way is the quickest. Do I bring her here on a fiance visa, then marry her here? (not sure what the processing time is...) Or do I go to Peru where she lives, marry her there, then get her a visitor or a K-3 visa to come back? Any information on time frames and steps in how to achieve any of these scenerios would be appreciated. Thanks!