Here is an awesome quad workout I did last night. I love lots of volume. Give this a try next leg workout. Send feedback let me know how you like it.
Leg extension superset db lunges 5x20
hack squats 5x12 (stretch quads on a bench btwn sets to draw more blood)
Leg press ( feet wide slightly out and stretch btwn sets off bench to draw more blood) 4x15-20
Smith machine squats 6x12
*leg extension 5x30 (30 sec rest btwn sets)
Vertical leg press 4x20