Like the title says, I have decided to go with flatwounds. I'm looking at D'Addario Chromes, Ernie Balls, and Fender Flats. 1. Which of these sets gives the warmest tone with deep lows and will last the longest? 2. Will all of these string through the body? 3. Are all flatwound strings stainless steel? I'm new to flats...so i'm sorry if these are noobish questions. Any advice is appreciated as always!