If you are lactose intolerant or currently watching calories carefully whey isolate will be the better product for you. Isolate and concentrate is basically the same protein, but the isolate is filtrated more which means zero fat, zero sugar & about 15% more protein per serving.
Believe Isolate protein is the first ever publicly 3rd party tested protein powder that gives you exactly what you pay for. This product contains 27g of the highest isolate concentrate grade. Whether you want to boost strength, add size, or get shredded, this is for you.