It's a very important factor to me. I wouldn't use anything in the top 50. My son's name was an exception because he was named after his father.
If I liked
Noah, I would never use it due to its position on the popularity chart.
People can say it doesn't matter, but there are names that I've known multiple bearers of so that last names always had to be used, and I wouldn't want that to happen to my son or daughter.