Any type of whey you use will depend on why you’re using it in the first place. As for which brand you use, some might say so and so is better than so and so, on top of all the company’s themselves making the same claims. As far as which brand is better than the next, obviously there are some that really are just terrible but what it really comes down to is nutritional value and how it tastes, which is definitely a matter of personal taste.
Whether you’ve a small skinny body or a medium sized body, or even a fat body which you want to turn into muscle, protein supplements are a really good way to go. In the case of if you are obese, you’re going to want to lose most of the fat before starting to gain muscle. Protein supplements are very helpful when use properly, otherwise you could end either wasting money if you don’t put the time into working out or at least getting physical exercise. If you don’t, the protein supplement becomes useless.
In brief, You’re Free to do the research essential, talk to some people who have or still do use supplements and get the information you need to achieve your goals.