Looking to upgrade from my cruddy canon 70d so I can finally stop filming in 720. For a decent priced dslr or mirrorless camera, which do you guys prefer? Lumix gh3/4 (cant afford the gh5) or and earlier A series sony? Like the 6300 or a7? Obviously will need a metabones or other adapter for my lenses but has anybody compared the two or like one more than the other?