Prime XR Plus, XR Black, and CS all share 99% UV Protection and the same darkness options. They also all come standard with a Nationwide Lifetime Warranty.
Here are the key differences:
XR Plus & XR Black are both ceramic window tint options that provide amazing levels of IR heat rejection and will keep you cool and comfortable for daily driving and road trips. Both options also come in optically clear shades to cover the entire windshield for optimal performance.
Prime CS is a premium tint option that provides basic UV protection with minimal heat reducing properties.
If you spend a considerable amount of time in your vehicle, and want to spend that time more comfortably, opt for XR Plus or XR Black.
If you don't care much for added comfort and just want basic UV protection and privacy, Prime CS is the perfect option.