IMO, finding a PC that is tonally neutral and has powerful dynamics and clarity top-to-bottom is not easy. Most of the tonally neutral PC's I've tried are lacking in dynamics and/or clarity, while many of the more powerful sounding PC's seem to have serious colorations.
Honestly, it wasn't until I started building my own PC's that I got a handle on what a neutral PC sounds like. With the huge number of possible combinations of conductor, geometry and terminations, the 'flavors' become a bit mind-numbing after awhile. I know I've personally auditioned 144 different combinations, and only about 10 percent seemed relatively neutral to my ears.
Of course, my experience has also taught me that getting cable fanatics to agree on what exactly is 'neutral' is a pretty tough gig. :)