Over the years I've used a variety of LEDs. I started with a 300 watt GLH, which I'm still using and it's still going strong after 7 years. I got sucked in with the Goldstars. The first two I bought were 2010 models and neither works anymore. I also have a 2011 model and that was an improvement and is still working thought not in use right now. When I started my hydro setup I went with six 280 watt FERO 6 spot Bulldogs. These are good lights but were not enough for my system. Two of them now have a burned out spot. I'm using two of those for my veg system, one for mothers, and the two with the burned out spots are over my autos, along with the GLH. To replace the FEROs and get more light on my hydro photos I bought two KIND XL1000s. I couldn't be happier. These are some damn good lights and are doing a great job. They are covering a 4' x 8' area and at 32" above the plants, light it up very nicely. They produce nice tight buds with excellent trich coverage. I love the adjustable spectrum ranges which allow me to turn down the red during stretch, then turn it back up once full flowering starts. I highly recommend them.