All kidding aside, I highly recommend Valentino on anything PK18 or Activator related, especially this year after, IMO, the drier heads present on most patterns.
I have nothing to do with them and get nothing for saying this. I use mostly MoRich equipment and UFO and Snake Oil tame this equipment to the point where is usable in more conditions. Its a drag to have equipment in the bag that is too strong to use and stays in the bag, or worse yet, in the basement.