Led lights

Has anyone ever used the viparspectra led full spectrum lights before. I have a 600 and a 450w linked up together. This is my first time using them. Just wondering what people's thoughts are on them.

Yes, they arent the best but do a half decent job. heres some vipar 450 reflector series nugs of a jack herer 4 ish and 5 ish weeks into flower in a closet grow (i let my friend borrow the light for shits with his budget grow if u want to call it that lol)

I heard alright things about the 600 watt vipar