Winners Choice is a good string, as York said.
I use Trophy Bound strings. They're danged good. You can choose any color combo you want. A cool one, that my bow tech used a couple of years ago, that I now see on the Primos team's bows, is flo. orange and flo green. I think I paid 70 for a set of string and cables.
Just keep doing what you're doing with the wax. You definitely don't want the string to dry out. That'd really tick you off!