One of the best, albeit unintended, compliments I get is when people are surprised by my body weight (156lbs). Most assume I walk around at 175-180. I attribute this to my programming, which combines muscle density (strength) and muscle mass (hypertrophy). Density style training, theoretically, increases the number of muscle fibres. Muscle mass training damages the fibres causing them to repair and become larger and stronger. This kind of training works for me but I won't claim it works for everyone. I know plenty of bigger guys who adhere strictly to muscle mass type regimen (pure bodybuilding) and it works for them. To maintain my size (or the appearance thereof) and strength, I've found it necessary to incorporate both. Learn what works for you, stick to it, master the basics, and apply the principle of #progressiveoverload.
Leave the fancy sh*t at the door.