I use outlast 17 at 57# in my 2012 roddick plus. I bought a reel and love this stuff. Durability is great, is has good spin but still allows you to hit flat when needed. Touch is the only area that is average. Overall, and I try a lot of string, this is the best for my racquet and style. I don't believe it is harsh at all.
HEAD GRAPHENE SPEED PRO
HEAD SONIC PRO EDGE 16G @ 55#