Sony Alpha 6300
The Alpha 6300 is Sony's first DSLM camera with an APS-C-sized image sensor and 4K recording. In addition, the camera offers a very good autofocus for both photo and video.
We generally recommend SDXC memory cards (64GB and more) with an UHS-I-interface and a SD Speed Class from U3/V30 or above, if you're using a Sony Alpha 6300. Extremely expensive UHS-II-cards or just faster UHS-I-cards do not offer any advantage in terms of speed (burst shooting) or video capabilities.