Whatever you buy, check the label to see if it's been rinsed or not. As harvested, quinoa has a very bitter coating that takes several rinses to remove. Some brands are pre-rinsed. Can't hurt to rinse it in any case, I suppose, and taste a little of the rinse water to be sure.

I find the flavor a little too sweet for most grain-type dishes and soups, but I like it in salads.