Do Windshield Repair Kits Work? (BUDGET DIY VS RAIN-X)

Today, I'm putting Amazon's 2 best selling Windshield Repair Kits to the test: Rain-X vs Do It Yourself brand. We're going to find out, which one works better, if at all... Can they actually make a difference to the 70" long crack I have across my F150's windshield? Will they be able to fill the bullseye cracks in my field of vision? Or will I be left with an expensive windshield replacement...