[leakycap]

I look at these systems like I look at templates or Lego instructions... here's what you can do! Now go do you.

GTD from the days of Palm PDAs still works fantastically if you just use it.

The key is just to choose a system that seems like it will work for you based on the published "way to use" it ... and then make it your own and stop looking.

You basically need a monogamous relationship with blinders on so you can actually become a deep expert in your own productivity tool and be able to rely on it and refer to it without thinking.