I have had a chip in my windshield about 6inchs from the lower corner. Over time a crack has traveled to the end of the corner, Its about 4 years now, and it cant get any worse as it cracked to the edge. So, either I replace it and not know if I will get a clear visibility warp free thick glass, or if I should just leave it as I have.Its low enough not bother when driving and easy to ignore, yet high enough to just see it.
I wonder if glass companies have different ratings on visibility, uniformity, strength, noise, and such. You would think with a glass that you are facing in a car everyday would certainly have such, but it doesn't look like its the case. At this point IF I replace it I would be looking for "better than OEM"