The video I posted with my last comments was the results of CO Finest's grow journal using the Spider 4 in a 4x4 and those results were awful. I've seen his grows before, and he's a decent gardener, but he's had better results with Mars Hydro reflector panels than with your COB's.
You mentioned that the light comes with 120, and 60 degree lenses. Lets say I use the 120 degree lenses to veg a 4x4 tent full of plants. Now when it comes time to bloom, and I attach the 60 degree lenses, the lights footprint will no longer be able to cover all of the plants in the tent. In fact, it will only be able to cover around half of them. What good is a light that can only bloom half of the crop that it vegs?