Don't need powder and BCAA's. Either one or the other.
Some powders have BCAA's ramped up anyway. Glutamine often is too. The amounts should be listed on the tub and / or website anyway, so if you see numbers for them, like they're 10mg's or higher, they probably have been cranked up.
Casein at night, Whey after workouts.
Creatine probably works better for bigger guys. The bigger you are the more it works. Don't be fooled by ripped Juicers saying some Creatine product gave hme 50lbs more Bench press. Them yes, but if you weigh about 60-70% of their weight, you can probably kiss goodbye to gains, anything close to those they claimed to get, off any Creatine supplement.
If the powder is one of those with things like loads of Aminos, Vitamins, Herbs in it, unless you've really researched it thoroughly, don't use it for several reasons.
A: You probably don't know what all the things in it do, so you don't know if those things are in good amounts, or poor amounts, can't cause any short or long-term side effects, can't increase the symptoms of illness, or existing problems and can't interfere with medications.
B: They're expensive and full of hype. Unless a protein powder with 50% more cost attached, could get you massively naturally bulked inside of 2 years, it's not worth the bother. Paying through the nose for decades, for slightly accellerated gains, then when you physically peak, a "feeling", and ending up with over £10,000 or $10,000 less to spend, when you're over 60, is a stupid idea, compared to a basic powder with Carbs.
Arnie never took such things, because he couldn't, so unless he had to juice when he was 170lbs or less, then take it as read, most supplements are expensive and / or pointless, as he would have gotten big natural mass on big calories and hard work only. You don't even need a basic powder to get big, but it can help.
Bascially Protein and Carbs yes. BCAA's instead, yes. HMB, (only in a powder, not seperate). Glutamine yes. Creatine, (only when you've some solid mass first) and not in a powder, if you're getting around 5g per dose and intend to use the powder virtually ever day, as it makes it harder to use more than one dose a day, (incase you ingest too much Creatine), or have split dose Creatine, or load up without taking 5 shakes a day for a week, or without using another Creatineless powder for anything between 1-4 weeks, depending on your cycle.
Anything else is basically either crap, poor or expensive crap. Even if I was tempted to buy things online, which I don't, because dealing with "faceless corporations", carries customer satisfaction risks.
I would never buy anything sold on places like Bodybuilding.com and T-nation, because they just overpromote stuff like the Magazines do, most of which is expensive crap on probably "loss leader" 3-4 week discounts.
After all, if you see something listed at $15 off the old price, there's no way that's a long-term price, it can't be, unless the whole thing is a con and that old price was never used to sell the product, in which case that's deceptive and a smoke and mirrors trick, to make people think they're getting discounts that have never existed. N.B. I'm speculating about things, not outright accusing anyone of anything specific, as that's libelous and not my bag.
Multi-vit rule 1.
Place in some tin foil in an Oven. heat at around 350 for 3-4 minutes if it goes Black it's got Coal Tar in it, (a filler). Bin them.
Multi-vit rule 2.
Place in 2-4 inches of Vinegar. If it dissolves in 30-45 minutes, it should dissovle in the stomach.
Sediment in the bottom is Grit, anything floating on th Top is sawdust. These are fillers not active ingredients, so are not legally required to be listed.
This is a secondary rule, because if you do this first, you can't do an oven test on a dissolved multi-vit, so you'd need to use another one. If they're good you're wasting 2 not one. one that hasn't blackened in the oven, could still be Vinegar tested, if it blackens why do the V T?
Pharmacutical grade Multi-vits, have their ingredients listed in full, that's all that means. They might be more expensive possibly, but that doesn't guarantee no fillers or acceptable amounts of things. BEWARE of PG multi-vits.