It is YUMMY.
I agree. Much better than Diet Vanilla Coke - that's awful.
As a kid, my aunt used to take me to a store with an old lunch counter and they made vanilla Cokes and they were awesome. Of course, that's when I drank regular Coke. Now I only drink diet.
So when I first saw Diet Vanilla Coke in the store, I bought a case of it, since there were no individual cans or bottles yet. I couldn't even finish one can, it was so bad. Very disappointing.