I have a Viparspectra light, and another black box LED that I can't recall the exact brand. I've had them running for 2 years, and 5 years respectively. Have not ever had an issue with either of mine. I do like the Viparspectra because of the built in timers and digital selection of whites and blues intensity. My other black box only has a single power plug, and no built in programming, so I am unable to set blues and whites on separate photo periods. Not a big issue, but If i had to re-buy, I'd get the Viparspectra.
One important note if considering the black box style of LEDs is the wattage is exaggerated. For instance, the "300W" one I have only pulls 200W, and the "165W" one only pulls 110W. They say 300W and 165W because that is the rating of the LEDs, but they do not run them at full power, even with the intensity turned all the way up. A bit misleading, but seems to be the case for all the black box LEDs. I don't know if this is true of the name brand LEDs.
I'd suggest (2) of the 165 watt versions as you can spread them apart more than a single 300W, and cause less shadowing at the ends of the tank.
I have a 300W and a 165W over my 150 gallon and can grow softies, LPS, and SPS just fine. I have growing acros, and a birdsnest that's over 12" in diameter, all grown solely from the black box lights.