I don't know that the choice between squat and leg press is an either or. To me, the squat works hams, glutes, spinal erectors, etc., and leg press is primarily about the quads. That said, I'd agree that squats are more important because they're a compound exercise. Leg presses aren't a regular thing in my routine. I throw them every once in a while just for the hell of it or if I need to get a good stretch going for my lower back. To each his own, though.
For the record (for Carlos) I've always had big legs and am an easy gainer mid back down. Chest and upper body I have to really work my ass off at to see good gains; hence the lopsided stats of only a 185 bench with a 315 squat and a 405 deadlift. That said, it's all been hard work over the last 1.5yrs. I started with a 50lb squat, a 40lb bench, and a 115lb dead (after lifting for a couple of months). The point is, if you push yourself and lift smart, even old pharts like me can improve.
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