Sole Protectors

I am wondering, does anyone on the board use these at all? Are they dependable before I make a purchase for the XIs and upcoming releases? If there is a reputable brand out there what would you recommend? Apologize if there is a thread regarding this already in advance.....

Use this thread for topics like this http://niketalk.com/t/15471/official-sneaker-care-maintenance-post-its-back