The PSP is one of the three best pocket kits on the market right now- and I'm going to say that I don't think any of them are 100%. You add and subtract items, repack and reorganize, to fit your constant but also seasonal requirements.

The purchased kit should only be a way onto the path, maybe a short cut but still only one of the ways, not the destination. With due respect to the Marines: This is my kit. There are many like it, but this one is mine.