I was never a big fan of LED's, but the technology is advancing in a big way. We have a 50,000 sq.ft. warehouse and use MV/MH high bays. I did a lot of research and I found an LED high bay. Our MH lamps were 400 watts. I found a 196W high bay that had a great CRI, which is an important point when looking at LED's. You don't want green hues on everything. They had a lot of pluses like IP67 rated and a 40K hour life. The manufacturer used Meanwell drivers so it was a good all around high bay. I purchased over a 100 new fixtures and the difference is like night and day. Not only that, the money we save in power consumption is great. Anytime you go LED, Leeyean, spend some researching all comparable fixtures. See if you can get a copy of the LM79 report from the manufacturer if they have one on file. Usually they won't do it for you if they don't have one as it costs them about $1000 to get the testing done. Also, make sure to check the listing. You will find most are CE and not UL or UR. That is one problem we have with a lot manufacturers coming in and showing us their new LED lights. My first question is "is the light UL listed and if not, are you seeking either UL or UR listing" because if they aren't, I can't use this light at a show because I have yet to see a local B&S authority who had CE on their approved listing agency list.