Lindsay looks more like a surname and pronounced Lind-SAY to me, where as
Lindsey looks like Lind-see even though that spelling is also a surname. I don't especially like it but prefer it to be spelled
Lindsey for some reason and don't remember meeting any
Lindsay. It sounds like the name of a woman in her 20s with long brown hair.
"Wanting to be someone else is a waste of the person you are." -
Kurt Cobain