I have a Sunbeam that I bought at the thrift store (or maybe at a rummage sale) at least 10 years ago, maybe 20. I have always used distilled water in it. The directions say to use tap water and rinse the water tank with salt water periodically. I have done that about twice. I have hard water from my well, which tastes wonderful, but I won't use it in my iron.
I also have a brand new Black and Decker iron sitting on the shelf still in the box. I had thought I would be prepared if my Sunbeam would quit, but it's going strong. It has a very long cord which I finally figured out how to get out of my way. I hung it from a hook near the ceiling on a piece of elastic. It comes with me when I need it and goes away when I'm finished.