I am currently using a 90w LED grow ufo for my grow...I've gotten pretty good results from it, man. For a stealthy closet grow, led is just fine, but if you want a fat yield you need to use HPS, for flowering at least. LED is great for vegetative, so-so for flowering, but it's convenience alone makes it all the worth while. If you have a serious grow room w/ HIDs, make sure to vent the heat out of those lights! That will keep your plants happy, and the feds at bay