So I'm finally going to ditch my pedals and go rack. I just can't seem to make pedals work for what I want in any kind of uncomplicated way. I'm looking at the Rocktron Replifex or Xpression. Here are my questions: 1. I'm playing metal with a very, very high gain amp. The gain is turned up so much that the noise is unbelievable. I bought a Rocktron Hush Super C. It took care of the problem. The Rocktron units I mentioned supposedly also have the Hush built into them. So does this mean I can ditch the dedicated Hush unit? 2. I'm using this to boost leads, mainly. Can I do this effectively with these units?