I am surprised how many use Virginias for snus. Don't get me wrong. I loved straight Virginias when I still smoked, or blended with up to a quarter of Turkish for the same. For snus though, I'm sticking with the Swedish method of using only air cured to severely limit TSNAs which are abundant in flue-cured, from what I understand.
Personally, I'd love to add a bit of rustica for experimentation. However, my preference is a much lower nicotine content than is standard in Swedish manufactured snus. Even the minis had way too much 'bite' for my taste. I believe it was a combination of too much nicotine with too much soda ash as well.