You must be a researcher!
Like I said, if you have the money for the expensive stuff and you like it then enjoy. It is certainly not going to do you harm. I got probably a half dozen salts of various types on the shelf of my pantry right now. But while the taste may differ, nutritionally they are just salt.
Just make sure you get your iodine. The repercussions for not getting enough of that in your diet can be most unpleasant.