Hello woodant,

Not sure why nobody has tried at least to give you an answer yet in all this time, but I will try.

First the claims are bogus, no 90w LED is going to match 400w HPS. It takes at least 50% of the wattage of HPS to match performance with LEDs. So to match a 400w hps you need at least 200w of LED...but not all LEDs are created equal.

Next, if we look at the chlorophyll A & B needs of the plant we'll see that A peaks at abt 435nm (blue) & 660nm (red) and B peaks at abt 450nm & 635. Looking at the specs of the two lights, the second one the "quad band" hits these points best. You can grow plants with just these two bands. The orange is really not necessary and is of little use. The white has some redeeming qualities, it will have a blue spike that will add to the blue needs and maybe will come close to the 635nm.

Conclusion; the 90w Quad band will grow better then the other light. Not because it has "four bands" but because it's red and blue bands are closer to the plants needs.

Hope this helps you out. Best of luck.