I've heard of him. Not sure which products you're interested in but I hear Superfoods is great. I used a product by Dr. Christopher which was a colon cleanse, same as Dr. Schulze but less expensive. I guess it just depends what you're looking for.
I did a few colonics and then an intestinal cleanse called Colonix. It was the BEST thing I ever did for myself. But again, if you're just looking for some vitamins, I'll spare you the details.