Pepsi Max won't really affect health much apart from teeth.
Lilt is the best diet fizzy juice.The Lidl knock off is also good.
I love Lilt. I had some recently during the heatwave with ice and wondered why I hadn't had it for so long.
However, I noticed they've changed the logo to look identical to the Fanta logo and it even has a little Fanta logo on the side. So you can bet your bottom dollar it'll soon be rebranded to "Fanta Pineapple and Grapefruit".
I feel like all the big companies eventually ruin all local brands - Cadbury being the main example.