The Panasonic GH5 is better than the Sony a6500 in every way except autofocus, price, and sensor. So it really depends on what you value, but the Sony a6500 might be better for you.
Sony a6500: B&H Photo/Amazon/Adorama
Panasonic GH5: B&H Photo / Amazon / Adorama
Panasonic GH5 Film Maker Kit: B&H Photo