Nobody can personnaly know if a supplement, which is by definition has small and long term health effects, is better than another or not. If you can feel the difference, it’s just the placebo effect (especially due to the price), a psychological, unscientific and irreproducible thing.
I’ve seen eye watering priced magnesium supplement (from Juvamine, not to name names) that ends up being junk because it’s made of “marine magnesium”, a marketing term for magnesium oxyde, the cheapest and LEAST bio available magnesium form. That’s why I called out the price=quality claim, especially as a blanket statement in a field with so poor science as nutritional ‘science’.
Unfortunately, there is no simple solution against the wild claims and the marketing push, except extreme skepticism and a lot of personal research. Eating carnivore has dramatically improved my fitness so I don’t really need supplements anyway.
I had sound reason based on the medical literature to think that those supplements would be helpful. They enabled me to claw my way back from Chronic Fatigue Syndrome; from persistent, atypical shingles; and from the beginnings of what I believe was osteoporosis, arthritis, and Alzheimer's Disease. A lifelong tendency toward cold hands and frequent colds was also remedied.
My current doctor now shakes his head that my blood and cardiac numbers are better than his. My contemporaries say that I look ten or fifteen years younger than I am.