It's been so long since I read about these!!! Even though I'm well into the program!!! Which should pretty much answer your question!!!
If these are the little green numbers used when eating out or on special occasions to estimate your points values, then, well, NO I don't use them. I still try to add things up as best as I can and let the Flex points take care of the rest.
I overeat if I don't account and measure and weigh. The Core plan was a disaster for me, as I don't acknowledge when I am full, and will overeat every time. And on Core, whole wheat spaghetti was my downfall ("why YES please, I'll have another 4 cups because I just don't feel full...")...
Kira