Stumbled on this article. Basically someone did a comparison of several different micro SD cards to see which ones where faster. The tests are a bit informal and from my own experience, could change with time (manufacturers have a tendency to change chipsets and not the model numbers). Results, Samsung EVO+ are the best bang for your buck.
http://lifehacker.com/microsd-card-quality-makes-a-massive-difference-in-rasp-1745961206