I’m a big fan of Nginx personally, but this is really one of those questions where there isn’t a right or wrong answer. They both have pros and cons. I generally suggest people just use the one they will be most productive with. Unless you’re specifically looking to learn about a new piece of technology, use what you’re already more comfortable and knowledgeable with.

Check out this article for a run down on things to consider when making your choice:

• Apache vs Nginx: Practical Considerations