Gorilla Mode includes creatine and glycerol alongside higher betaine and tyrosine amounts. BULK BLACK includes 4g beta-alanine, 200mg theanine and 200mcg huperzine A. The doses refer to the formulations compared here, not every historical tub.
Gorilla Mode lists 10g L-citrulline. BULK BLACK lists 8g citrulline malate (2:1), not 8g pure citrulline. Gorilla Mode also lists 4g HydroPrime at 65%, equivalent to about 2.6g glycerol.
The full-serving caffeine difference is 75mg. BULK BLACK also lists 200mg theanine; that does not guarantee a jitter-free experience.
Bulk Black gives 30 full servings while Gorilla Mode gives 20 full two-scoop servings. Current retailer pricing should determine which offers the better cost per full serving.
Gorilla Mode is the bigger build — more caffeine, 5g creatine, glycerol, higher betaine and tyrosine. If you want a do-it-all loaded pre-workout and creatine bundled in, it makes sense.
Bulk Black is smaller but more controlled, keeps 4g beta-alanine, adds a real focus layer and gives 30 full servings. Both brands publish testing info, so that isn't the deciding factor — formula fit and how much stimulation you want are.