If you’re only talking about plain I don’t have a recommendation, but for flavored I prefer Waterloo.

This is a crazy recommendation but I think Canada dry plain seltzer is basically as good as topo Chico. I got some at a gas station the other day cause I was dying of thirst and it was as good as topo Chico my wife thought so too.

I’ve tried a bunch but found almost all the bottled fizz I can buy to be quite bitter. I own one of those carbon sifon things now. Probably better known as sodastream in the Americas

For all you sodastream people - I want you to know you are supporting genocide.