I'm trying to recall if I've tried the zero sugar version of Pepsi, well not here, but I did consume lots of pepsi max in the UK many, many years ago (pretty sure I did not know it was sugar free). I think I might give it a try. I'm a bit of a coke zero fiend, including obtaining the syrup and making it in my sodastream. I have to say I have cut down consumption a lot though (diagnosed T2D this time last year).
I will say one thing I noticed over the holiday period when in Buffalo, which is the cans of coke zero seemed to have no real flavour to them, whereas the ones in Canada did. The bottles seemed ok though.
I suspect people here might not be too miffed about the changeover, but I can see the americans being less than enthused.