What is the best option for using fonts on web pages?

I'm wonder what's the best choice for using fonts on website, if we talking about performance (Google Page Speed Insights, GTmetrix).

I want use some fonts from Google. What way should I use?

  1. standard link href
  2. @import url in CSS style
  3. Google Web Font Loader
  4. woff fonts hosted on server

Also, I use head expires headers via Wordpress plugin.