I am going to purchase two or three mirrorless cameras along with SCUBA housings. These are for reef surveys and will be used at depths of less than 60'. I'll also get a lens for each, either a fixed focal length or a zoom if it is bundled. Because of the quantity I'm looking for the best combination of value and performance. I'm willing to compromise on camera specs if there is a housing that is reasonably priced. Does anyone have any suggestions? So far I am looking at Sony but the total cost is looking pretty stout.