Diet Pepsi in front of me has Apertame...124mg/355ml. Guess it’s been a different formula in Canada. I like Diet Pepsi way more than Diet Coke. Looking at a Diet Coke...131mg/355ml.
http://drinks.seriouseats.com/2011/11/soda-the-pepsi-throwback-throwdown-is-sugar-better-than-hfcs-high-fructose-corn-syrup.html