Diet Pepsi is a very popular soft drink in the United States, but it does not make my list of favorites. When you first open up a can, its bubbles reach and tickle your nose. After the first sip, which has a bite, it loses its taste. It loses its effervescence. It is awful.
Every time I buy a bottle of Diet or Regular Pepsi, I wind up dumping the contents after the first drink. You have to consume the whole bottle right away or it will become flat and tasteless.
If you are looking for a great diet soda, try Coke. It has life and lasts longer.