Otterbox is a brand that needs no introduction, as they've been making quality products to protect our gadgets for years and years. However, many don't know they offer really nice all glass screen protectors.
The Otterbox Alpha Glass is HD quality and crystal clear, offers the same great touchscreen responsiveness, and is fortified and strengthened glass. Meaning it will look good but won't scratch easy, and will never shatter. It's more expensive than most, but it's coming from a tried and tested company.