I'm a big fan of Pepsi Max and never really liked the chemical after-taste of Diet Coke. Recently I couldn't get any Pepsi Max on Amazon because of the Covid related supply chain issues, so I decided to give Diet Coke another go. Boy, was I pleasantly surprised! Since they started sweetening it with a combination of aspartame and acesulfame potassium, that awful chemical after-taste has disappeared. I'm loving the current formulation of Diet Coke and intend to buy more!