They are the BEST alternatives because they have the purest form. They are used to make extracts!
It is made from artificial flavorings. That doesn’t necessarily mean the vanilla flavor will be bad. But it’s like comparing the flavor of margarine to real butter.
Think of vanilla powder as the dried version of vanilla bean paste. It also has a very strong natural vanilla flavor but is difficult to find and comes at a higher price tag.
You can substitute the normal fine salt with vanilla-flavored salt instead. Don’t increase or decrease the original salt amount in the recipe.