|Paul Edmund-Davies doesn't mind the tarnish...|
As for the question on why the other flutes didn't tarnish, well, it all depends on the metal and plating. Knowing the metal content of your flute is very critical. Sterling silver flutes could tarnish when played by people with acidic hands, but if that person previously played on flutes that were not sterling silver, the tarnish problem would not occur. The other flutes may have been nickel-silver, or perhaps they were nickel-silver with silver plating. Perhaps the keys were made of a different metal than the body -- which is always a choice with Powell Custom flutes.
So, if you are experiencing a tarnishing problem with your flute, or if you are looking for a new one, it really is important to think about the flutes you've played in the past. Try to think about how they responded -- did they tarnish? Keep records of the models and their specs -- especially the metal content of the body and keys. This will help diagnose problems if they arise (like the "quick tarnishing") and truly help you pick the best flute for you!