Hi I currently have the acme matrix whcih is the £20 cheaper option and could not be any happier with it, I was told that acme are actually paid to make the revo 4 for Adj in their own factory. My advice is to save ur £20 because all you pay for is a slighty glossier finish on the outside of the light, if ur like me u would rather do without the finish and hav a few pints after the gig