I was reading a free e-book “How-to: Optimize Your Website Speed” by Artmov and came across a piece of advice that I found interesting. The @ symbol has gained a lot of popularity in CSS recently given its usefulness in media queries for responsive design (@media). Artmov suggests that the LINK tag should be used for loading style sheets or accessing Google fonts rather than the alternative, @import. He explains that Internet Explorer downloads these files sequentially rather than in parallel when the @import command is used thereby increasing page load times.
So there you have it. When possible, use the LINK tag.