I like many others fell into the squat til your legs burst mind set. Problem was I wanted a pair of quads that matched my upper body. All I got was some gains in my glutes and groin. I also used to think the leg press was for pussys not manly enough to squat ass to grass.
Since pre exhausting on the leg extension and doing most of my work on the leg press I actually have some swelling and soreness in my wait for it quads! I'm strong enough and want to lift for aesthetics now so if I do squat it will be front or high bar with a narrow stance and it will be my finisher, not my staple.
On a side note. Are leg extensions a healthy exercise? I don't go extremely heavy and pause at the top for a nice pump. I believe Cressey is not a fan and I love his articles so I'm torn.