mpomerantz - I have a Kimber PK-10 - Ascent w/ Gold connectors. I experienced increased resolution, depth, better bass. There are some videos on this. I have not used any other Kimber PC.
jasonbourne52 - The OP asked for input from those who have experience with Kimber PCs. Your post is non-responsive. If you don't have experience, you could find another thread to pollute.