Hacks. I squatted my ass off for well over a decade powerlifting. My glutes got huge, my quads were okay. I kept trying to make some kind of free squat work after my first show, and it was just a lot of small tweaks, so-so quad stimulus, and sets that would end too early because something else got fatigued. Switched to hacks and haven't put a bar on my back in over 4 years, and my quads are my best body part.
Always later in the workout, though - every leg session is:
- leg curls
- adductors
- leg extensions
- leg press or hip press
- hacks
- lunges