Love the nectar Protein shakes. Personally, I gravitate towards the fruit flavors because that is what makes them so different than other brands (everyone has chocolate and vanilla)...that said, I did try the double-stuffed cookie and enjoyed that w milk. I also know many people use the vanilla bean as a base to add sf syrups and extracts (root beer, orange etc) to.
Bj's Bariatrics is less than the site you mentioned (you get more packets, something like 11 or 13 packets, for 14.95 or so)