Perhaps the first step in good survival techniques is to study up on conditions prevailing at your destination and along the route. This of course, poses quite a problem if you are flying cross continent by jet, covering many environments, but that is an extreme case. Usually we know where we are going and have a pretty good idea of conditions there.

The referenced kits are dreadfully expensive for what they offer. And there are some curious items. In the first you reference, they include a mini carabiner. !! Why? In the second, they offer a Princeton Tec EOS headlamp, a good .

My approach is to first devise your EDC. My keychain, with me at all times (including when I sleep) provides a flashlight (100 lumens), a small multi tool (PS4),a lighter, tiny prybar, and cash. I always have a mutitool as well, except when dealing with TSA.

When I am out away from home, I carry some sort of pack, with what I characterize as a "core bag." It has most of the standards - a signal mirror, whistle, lighter, waterproof match case, hand sanitizer (also serves as fire starter, duct tape, mylar tarps, small knife, band aids, dressings. I also include in the pack a FAK,
and at least one water bottle with a metal cup. That will certainly get me through an unexpected night out (and has done so more than once)

I am going over my gear,preparing for a two week project (at least) where three of us will be camping out in an isolated location with poor communications, and outside assistance at least more than an hour away. I am quite familiar with conditions there, which is a big help, but like all of California these days, we must be extremely careful not to ignite the woods around us. We will be adequately equipped, but more important than our equipment is our knowledge, experience, and capability.

First aid is a good example of the value of knowledge over "stuff." You can have all FAK toys you desire, but your first steps on an accident scene don't involve any equipment at all, but are vital to the action you will take and the ultimate outcome.

Ideally, of course, you have both knowledge and stuff in overflowing abundance. That's what ETS is all about, isn't it?