Budget?
For about $2000 you can get:
Sony A6300, Fuji XT20, both 4K capable
Canon EOS M5 or EOS M6 (1080p)
Above are compact size mirror less.
Also for around the same price, Canon 80D has pretty good video capabilities, but only 1080p. The new Canon 800D looks good too.
Very popular for YouTubers is the Panasonic GH4, which is recently superceded by the GH5, they shoot very good video at 4K
You can up your budget more and consider Sony A7S II, Sony A6500, Fuji XT2.
Research online and see what you need, is it for wedding videography, low light video, low budget production, used as B camera, for Vlogging? Your choice would most probably be ade based on what you need.
All above cameras take good photos too.
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