Just upgraded my tank to the K7 Pro II (95W) from Maxspect's Ethereal (130W), wow what a difference. I cant believe with such a small package, these lights pack a serious punch. Those 90degree lens helps focus and penetrate the tank much more than the "reflectors" on the Ethereal while keeping the same spread. It's also probably because the Ethereal is 3+ years old and the LEDs on it are getting tired. I bought 3 K7 to replace the 2 Ethereals i have, but just 2 K7s was enough to light up my tank more than before. Ill probably hook up the 3rd light as well in the future when my corals acclimates to the new light. The controller wasnt that bad to use and its pretty simple once you get the hang of it, tho I REALLY wish they would give us more time to decide if we want to keep that particular setting for that particular time slot before it times out and goes back to the main menu. All in all very happy with the lights. Excuse the poor photo quality and dirty tank.