Water marks remover for stainless steel?

The pans we have are about six years old now, and they have spots on them. Can anybody let me know what water marks remover for stainless steel has worked for them?

I have heard from other people that white vinager works well, but never tried it myself. This previous discussion: http://www.funadvice.com/q/... has some similar advice, and also mentions a product called stainless steel magic. If that's available at your local grocery store, you might try that one out (read the label first, etc). Good luck.