Stack or all-in-one?

Right so my aim is to gain size and strength and ive been training seriously, one body part per week, for about 10 months so ive got my routine and diet down. Im not really bothered if my body fat increases as i can always cut but obviously want to bulk as clean as possible! My next logical step is to experiment with supplements to optimize gains. In the past i have tried all-in-ones and got decent progress but am considering creating a more personalized stack.

The best all-in-one ive tried is Sci-Mx Omni Hardcore, I take half a serving pre and half post workout, so each day i take one serving and get the following:

Total Calories: 563
Protein: 45g
Total Carbohydrates: 80g (Mainly maltodextrin)
Fat: 4.74g

Vitamin B6: 2.1mg
Magnesium: 281.25mg
Zinc: 7.5mg
Chromium: 30mcg

MesoNoid Muscle Gain Stack (18g):
HMB (Hydroxy Beta Methylbutyrate): 1500mg
BCAAs (Branched Chain Amino Acids): 8000mg
Glutamine: 4000mg
MCT Oil (Medium Chain Triglycerides): 3600mg
Taurine: 1000mg
Aminogen: 200mg
Bioperine: 5mg
Chromium: 30mcg

Tri-CreataCore Size and Strength Stack (8.5g):
Creatine Monohydrate and Creatine Pyruvate: 5000mg
Beta-Alanine: 1500mg
AAKG (Arginine Alpha-Ketoglutarate): 2000mg

Andro-MX-T Male Support Stack (700mg):
Avena Sativa (Wild Oats): 210mg
Nettle Root Extract: 200mg
ZMA: 290mg

My question is, would it be more beneficial to buy separate supplements or an all-in-one? I was thinking of this for a stack:
BCAA's (Something like Xtend)
Creatine
Whey Protein
Multivitamin (I take every day anyway)
Fish Oil (I take every day anyway)
Carbs i can get easily from oats etc

The sci-mx has more added extras like HMB, beta-alanine, taurine, glutamine, ZMA's etc which, given an unlimited supply of money, i would invest in if i were to stack individual supplements, but the stack means i can bulk cleaner and i can make sure i get enough creatine and BCAA's as a serving of sci-mx only has 5g creatine.

Any thoughts would be much appreciated as i would like to place an order ASAP!

Thanks!

stacker