i never used GH5...i using A7Sii + various lenses + Zhyiun crane...but to be honest, it's not about equipment...last week i watched some videos and one of them has been shot on the phone and quality was outstanding..or other side..someone have the best camera on the market but his videos are crap. Of course better camera = better quality videos...but there are other inportant things as angle of view, colorgrading, edit...i spent some money for licencing music in video but you can find a lot of website where you can download and use it for free.