I have a TG-5 and TG-6 and used them exclusively for stills and video for several years. When I decided to upgrade about 3 years ago, with a similar emphasis on a system with a bigger sensor and full manual control, I ended up buying a used Sony RX100M7 with a used Fantasea housing. After a few dives in SE Florida that convinced me the camera was a keeper, I invested in a full Nauticam tray, housing, and wet lenses, and Inon Z330 Type 2 strobes. After three years and five long haul international trips with that gear I'm satisfied with those choices. My surface camera is a Canon R5 mirrorless full-frame, and despite the obvious differences when I compare raw images, I'm glad I didn't go with housing the bigger camera. I end up flying with two hardside checked bags that are usually at or above being overweight and I don't see how I could manage the housing and ports associated with the larger camera without giving up something. I also have two big video lights, and they work fine, but as another poster mentioned I found I don't enjoy video editing to match what nearly every other underwater video shooter produces, so the big video lights have stayed dry for a while.