What is the big deal with Whey Isolate?

[JohnnyAutoParts]

Its more than double the price of whey concentrate. Is its efficacy that much more considerable than the "cheap stuff"? A serving of VP2 has 1 carb and Isopure has no carbs. Optimum 100% Whey has 2.5g of carbs....BIG DEAL. Do an extra situp if an additional carb or two is such a crisis. Honestly, what is the justification for spending $25 on 2lbs of isolate when you can get 5lbs of concentrate for the same price? And I want an answer that justifies not only why it is better than concentrate, but why it is MORE THAN TWICE as good...because that is what the price signifies!!!

[Fluid]

The difference is not in the carbohydrates.

Whey protein concentrate is a less pure form of whey. It contains more fat and sugar ( lactose ) than isolate. It is fairly cheap thus it is the most widely used protein source for bodybuilders. Whey protein isolate is more pure and contains no fat or sugar ( lactose ). It is produced in two different ways:

Ion-exchange process
The protein is created using a chemical that sepereates protein from fat and lactose based on electrical charge. This produces a higher quality protein than concentrate.

Cross-flow microfiltration ( CFM )
This is a non-chemical process used to preserve the substructures of the proteins ( some say iso's protein becomes denatured ). Some say that these sub-fractions have added health benefits and aid in fat loss. CFM whey protein is hard to find and very expensive.

Fluid

[JohnnyAutoParts]

interesting stuff, but if this is true, how come most whey concentrates have little or zero sugar and little or zero fat? are you saying there can be added benefits and/or downfalls that you can't extract from the list of ingredients/macronutrient breakdown?

[AJ_11]

IMO, not worth the price. Tastes descent though

[Fluid]

The few carbohydrates that proteins have are usually for flavor.

Fluid