...recommended to me by a naturopath
By who? Your sister? Ha ha! I love it if true.
I've never ordered from iHerb. I have used Thorne products as some of them are suggested by my doctor (integrative MD). He also recommends some Metagenics items although I've never used any of their products. Another doctor I'm familiar with also thinks highly of the Metagenics stuff. I think your "naturopath" made some good recommendations.