Originally Posted by Ron Bennett

Not noticed any meaningful difference in carbonation - it seems as bubbly as always.

However, about 25 years or so ago corn syrup was substituted for real sugar in most major brands in the U.S. The difference in taste is very noticeable, such as with Coke.

One can still find soda with real sugar in many other countries, as well as, various "ethnic" stores throughout the U.S.

Another thing that makes a noticeable difference in taste and slightly with carbonation is the container it comes in - glass is superior to aluminum and plastic.

Ron