DISCLAIMER: Newb... don't leg press. Learn to squat and DL and use those as your tools for getting stronger. Now that that's out of the way...
My current program has me doing high reps (20) on a leg press once a week in a 4 day push/pull split. My gym has about 8 different variations of the leg press from laying flat on your back, to up right, to some sort of front squat press machine thing (old school 80s bodybuilding type gym).
My question is which one should I be using if I don't need to target any particular area more than another; I'm just trying to give the back a break because the next day is pull day w/ a lot of lower back stuff. One of the upright machines says it targets glutes and quads, so I know that's not it.
For familiarity's sake, I've been using something like this, just because that's what I used in high school and at the local YMCA when I was in high school:
It could be that it doesn't really matter, but I wanted to make sure I'm not missing out on some big development over the years, given my options. Cheers