I have been curious about those higher wattage diodes. From what I've read, the 3w ones are most popular atm because they supposidly have the best light penetration compared to the amount of head they produce, so I reckon as long as the temps stay down those high watt diodes should be good to give you a light boost, say maybe as a spot light while u have panels as the main lights on the side which will have a higher spectrum.
I imagine it would be more like hps growing as there are much less light sources, but much more powerful one. So where as with these panels we gotta give them enough distance for the plant to maximize the amount of bulbs it's getting hit by, and let the spectrum mix, with these huge wattage LED diodes, I'd say to try keep it much closer to the panels