Ohh I like this question. I’ve done so many so many stacks when I was in a calorie surplus’s mass phase. For myself personally, the most important thing is a stack I feel good while running both mentally and physically. No lethargic feeling or loss of appetite or mood swings. After years and years of self experimentation's and then my body just reacting differently to certain compounds I use to love over time, I came to finding my go to mass stack : Npp200/Mast p or e/ test cyp
And if I feel like throwing in a oral midway or at the end I love turianbol