I was so impressed with the Shieldzone Corp service and shield for my ZVM that I have to blog about it. So after about 2 months of use, I got a very tiny scratch on the shield. It was barely noticeable but being as anal as I am, I had to get a new one. I called them up and they asked me for my e-mail and name and sent me a new one no questions asked. They really make good on their life time guarantee but you have to send back the old shield so people won’t take advantage of it by asking for a whole bunch and selling them on eBay. Their customer service was helpful and kind and their product is well designed but a little hard to install if you’ve never done it before. Over all, I am glad I invested in an Invisibleshield. My ZVM looks brand new.