Fantasea Underwater Camera Housings are high-quality carbonate and have easy-to-use, labeled and well laid-out controls. They include a durable, double oring seal, leak detector, sunshade and hand strap. They also come in bundles with the cameras.
Then I tried a Panasonic LX-100 out. I was impressed by it’s super sharp and fast Leica f/1.7 lens and large 1 inch sensor. The camera has direct controls for ISO, notably lacking in the Sony RX100, and a unique and intelligent way you can switch into auto aperture or shutter speed simply by moving their dials to the end of the settings. No mode dial necessary.