Not saying other brands will or will not work, nor am I saying other brands can and can not cause problems. I am simply stating that paying a couple bucks (if that) extra a gallon for fluid is worth it to me. When (not if, but when) I do have a problem, I can say that I only used that manufacturer's and/or manufacturer's suggested fluid in my machines. Just one less thing the manufacturer can pin on me as something 'You did wrong'.
Disclaimer: The above are very general statements, not limited and/or necessarily relating to Elation and American DJ Family services and/or products. I have and work with many other manufacturers' gear, like High End, Martin, Jands, and ETC to name a few, all of which have their own set of quirks and/or problems possibly relating but again not necessarily limited to products and/or services.