Also what is your experience with artificial sweeteners? Pepsi Max and Coke zero have no nutritional value but can help with the sugar cravings. The sugar cravings usually make me drop the diet.
Do a little research on Glycine and see if it is something that may help your cravings. It is a non-essential amino acid that is good for gut health. It has a naturally sweet taste and is sometimes used as a sugar substitute. Add it into some tea or water to make a sweet drink. There are many benefits to it. As far as the Zero Sodas, the carbonation causes me problems. I am a big fan of PowerAde Zero. It works for me.