Huh that's an entirely different Reefbreeders website. Interesting! Also it seems to show the V2 version at the bottom of that page. Either light will of course work great, it just depends on what your preference is. I have the V1, and after using it for 6 months I'd prefer the v2 so I could manually adjust the white/blue balance. None of my other lights have sunrise/sunset functions and they're doing well.
That however is entirely personal preference.
That however is entirely personal preference.