Mixing different buds is nice and easy when you have a large selection. I rarely buy sativas, but when I do I'll mix into a joint or grind it up with indica, just to sort of take the edge off. I mean, I really like going to sleep but not when I just woke up.

I think you're right, though, mixing different buds, especially sativa and indica, does give you a more balanced THC to CBN/CBD ratio.