Is using underscore suffix for members beneficial?

Question

class C {
 private:
  int member_; // here is the underscore I refer to.
}

This underscore is recommended by Google Style Guide and Geosoft\'s C++

Answer 1

I always want to distinguish the class members from the variables. I use the _ as prefix for members and personally speaking this keeps the code clean and readable. Prefixes work fine with the editor's intellisense. Prefixing with m_ or s_ is useful but It looks ugly to me.