Re: Strings wearing your frets?
The material the frets and strings are made of make a much bigger difference than the string brand. Pure nickel strings are the softest, nickel wound are slightly harder, and stainless steel are the hardest. When it comes to frets, nickel silver is much softer than stainless steel. All strings will wear down your frets, but harder string metals will do it faster. If you play with a light touch, the frets will wear more slowly than if you're a heavy-handed player. I've played my main guitar every day for over three years, and it has zero fretwear. I use pure nickel strings and play with a lighter touch, so that's probably why.
Ryan