I like 2, 3, 4 in the list

The very 1st one is well-known cliche. The rest of them are very creative, combining our culture background perfectly, so they are more likely considered geniune and sincere.

Here's a link I'd recommend. The discussion threads are informative. People from both sides of the table shed their lights.

http://www.askamanager.org/2007/08/how-to-answer-what-are-your-weaknesses.html