Let me take this one at a time....
Leg press machines are all nearly the same.
Your body moving up and down (as in a squat) activates a whole lot more muscles. Pick up a copy of the Second Edition of Stregth Training Anatomy by Frederic Delavier. It will show you exactly the difference. Leg press isn't even a second to the squat in this area.
The weight is deceiving mostly because of what I just said. You are moving the weight along a track. You are not using your body to control the weight. Sort of like using a Smith machine. Plus you do not have your upper body and it's weight to deal with. Think of it this way; from the waist up I probably have 190-210 lbs that I am moving ON TOP of what is slung on the bar. That is roughly equivalent to 5 extra wheels on a leg press machine.
Westside is not a person, it is a place.
Louis Simmons is the owner. More of its members have national PL titles that the whole Gold's organization combined, and the place is only a 40'x40' gym. Essentially their PL training system is considered the gold standard.
Ed Coan. Is the Michael Jordan of powerlifting. On a good day Ronnie Coleman couldn't even spot what the kind of iron this guy could push.
If you want to build leg mass, here is my order of what I think the best exercises are.
1) Power Squat
2) Sumo Deadlift
3) Conventional Deadlift
4) Front Squat
5) Leg Press (if your knees and low back can take it)
In no way should any leg isolator machines like curls or extensions be included in that list.
B-