I don't know anything about HECS, but since ghillies were mentioned, here's mine. It's an Arcturus Ghost suit. It has 6 lbs of threads. Next time I'd probably get the Rancho that ghilliehinter has. Gets such good reviews.
It does work, but you're only looking at half the possibilities. Blocking out your negative energy is akin to using a good scent eliminator. You also need a gemstone bracelet to cast feelings of security. I wear something like this. This exact one isn't the only one. Anything that has blue laced agate, obsidian, rose quarts, flourite, or amethyst will work.