Huh, I never really thought about that before.... I pretty much vape whatever is currently loaded in a tank - right now, it's DIY Chocolate Custard. Although, I've cleaned out most of my tanks, so sky's my limit at the moment. Hmmmm, guess I'm gonna wander into my vape cave and find "dessert"
I hear some folks drop their nic in the evening to wind down. I'm pretty well at 9mg pretty much all the time, so, like caffeine, doesn't bother me enough to disrupt my sleep....