I have about 30-40 full serving samples of this in both vanilla and chocolate. Its very convenient to have the oats already mixed in. My one problem with mixing in my own was always a chunky-ness to the shake. While you can tell there are oats in the shake, its not noticable by texture. I use an oats n whey shake about 1 hr before my workouts. Really liking the product overall. Would work great post-workout as well. Taste is good, not great, but good.