Your razor is not going to look brand new for the rest of your life. Those water spots can be a booger to get off, but your razor now has some personality. You might use paper towels with your Maas when trying to remove the spots. You can't polish it too much with your hand, just watch that edge! You think it slices whiskers well, even a "dull" straight slices skin well...very well!

I'm sure you now know this, but we try to dry our razors and even strop 20x or more as razor maintenance. Many oil their blades (I do) with a oil of choice, personally I use mineral oil on a small rag to wipe my blade with after I have performed the drying & stropping.