UV or CD ozone? or both?

[jetfixr]

I am getting a new hot tub and I am confused about the preferred method of ozone generation.  I looked as though all the manufacturer were switching to CD ozone generators, but then Sundance started using UV.  My new tub will have the Sundance ClearRay system in it.  Would there be any point to adding a CD ozone generator on top of that? Overkill?  I plan to run ozone/N2 and keep the sanitizers to a minimum, my wife has sensitive skin.  The tub shouldn't see huge amounts of traffic, the kids are gone

[Jacuzzi Jim]

 We sold a few ozonators with clear ray but in my opinion it's over kill.   Not to mention ozone helps deteriorate pillows and underside of the cover.