I've used Ghost Armor on my previous 2 phones and it works nice. However, the back/side covers tend to peel and it is a wet install that takes about a day to settle.
For my 8X I bought the Zagg shield directly from T-Mobile since I didn't want to wait. It's a dry install and it's less "rubbery" than the clear body shield from Ghost Armor. Dry install can be a pain because once it's on that's it. With a wet install you at least can adjust. Anyway, if you go Ghost Armor usually stick with the carbon fiber style wraps since they are much more durable than the clear ones.