it's the METALLIC that has lifetime warranty
DYED only has a couple years, and it's cheaper and turns purple, but some bastards try to pass it off as metallic. DON'T BE FOOLED. Solar guard might be the way to go since their warranty allows you to take your car to ANY tint shop using their stuff to fix any bubbles and what not. Btw. it's not as simple as 5, 10 and 20 percent. Every company is different, but they're all roughly the same. For example, I have "dark" all the way around, and it's 13%. My sister and mom have "medium" all the way around and it's 31%...