There is no high output white dish. The white dish, by nature of white surface, drops the output about 2f stops because it doesn't focus, so has a much wider coverage area.
My personal preference is the silver dish with the white diffuser sock when you want to use it in close. But there is a click that insists this acts like a small softbox and has a different "look" than a white dish without diffuser. Personally, I don't buy this . . . they both emit a similar amount of light from a similar source size at a similar angle of coverage.
I see a lot of beauty dish shots with the light 10' from the subject, with really nice results, but the click insists this is not how you use a BD. But if you're outside and fighting with the sun the silver dish without sock will give you the same look as the white one, but will give you a 2f advantage in overpowering the sun. PLM will give you even more output and a wider source for this sort of use.
I'm more into science and physics than in magic light. So the answer is very subjective and depends on who you talk to.
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