Ernie Ball Cobalt Flatwounds are definitely the most suitable string for what i'm looking, but i want to see if there are any other, cheaper alternatives. Any other brands that you can recommend? I am interested in D'Addario Chromes and Fender Stainless Steel Flats. Are they any similar to Cobalt Flatwounds? If they lose their brightness fast, is it possible to bring it back by using denatured alcohol, by the way?