It's a Now Foods product...I've been using it for years
I've always preferred unflavored so you don't get locked into say -chocolate- for an entire month or two...with unflavored you can add any flavoring you'd like. Plus I've read the taste horror stories of some products.
I'm also a big fan of Now products, they have a large selection and tend to have good prices too, depending on where you purchase from.
I bought 10 lbs for $53 back at the end of March, now its $77 at the same site - yikes!