Want a cheap microSD card, but don't fancy ordering by price=lowest and choosing the cheapest no-name brand? The Samsung Evo Select could be the answer. It's very well priced, yet has the reassurance of being from a respected brand. Heck, it's even capable of 160MB/s read speed, which is barely slower than some premium UHS-I microSD cards.
Capacities vary from 64GB up to a generous 1TB, and all are V30-certified, so they can sustain 30MB/s when recording video. That should be enough oomph for capturing compressed 4K video.
