So far I have tried, and loved them all, Virus, CLS, GCD, and now Betelgeuse. The Creme Brulee is waiting for the nautilus mini which will be here today. I know you can mix and match these but what do y'all mix together to make different flavors? And when I go to the NT website, why are certain flavors only offered in like 18mg or 0 Nic? And..what does SR mean? I'm going to worry you guys and gals to death with questions! Lol Sorry in advance!