I keep also reading that you want a reserve big enough that you could hypothetically land unconscious. what is the WL for that roughly? I'm 180 lbs for example if that helps. obviously in a real world situation there's the issue of hitting trees buidlings etc, but I'm curious now, no flare, unconscious into a field, what are we talking roughly? also is it a bad idea to buy a much older, but unused reserve? they seem to be much cheaper