You also have to consider what type of protein you are getting, depending on what you are using it for. If price is your only consideration, than that's fine, but also take into account the type of protein and it's biological value.
The ON 100% whey is all whey isolate and some whey concentrate, so it's great to use directly after a workout because whey (especially isolates) are absorbed quicker than any other proteins.
The cheap-ass, walmart/costco varieties are largely whey, casein, egg & milk protein mixes, which doesn't make then necessarily bad but means that it will be a slower-release protein, better as a meal supplement in the morning or at nighttime to prevent catabolism, and less effective directly following your workout as it is not absorbed as immediately into your muscles.
KFC- In regards to H to the Izzo's supps being largely commodities, I'll agree with you on everything except the omega 3-6-9's, and even moreso, the glucosamine. If you are doing any hard MA training, the glu/chondroiton does wonders to prevent joint damage and soreness which can impede the following days workouts.
I do MA training 4-6 times a week, and also do some two-a-days and for that amount of training I'd consider it almost a necessity. Also, BCAAs and added glutamine is fucking awesome. Before I was taking them, I was sore every day, and could barely get to the gym the day after jits.
Nowadays, I do ju jitsu in the morning, weights in the afternoon, muay thai at night, and am still ready to hit the squat rack the next day. Before taking BCAAs, I really underestimated how much supplements can help, especially by shortening recovery time.
I started to watch 'bigger, stronger, faster', but I couldn't finish it because it was too fucking depressing to take the time to sit through.