I am not sure why your retiring the ML except to just try out something different. I am not sure that either the Krell or the Pass are going to do anything better for you than what you have. Maybe monos would be a thought and going in a totally differenct direction like Conrad Johnson or Rowland. I have had and have ML gear and love. I also just picked up a CJ amp and was really impressed with its warmth. Krell and Pass make great stuff, but are they really doing something really different and better than ML.