Oh I LOVE PKs, definitely my favorite tail type next to CT. As gorgeous as the longer-finned boys can be, PKs are so quick and spunky without their big fins weighing them down, and HMPKS are like little miniature HMs....The lovely spread and form without the big tails or risk of biting!!
I've had a few PKs, but these are my two current ones.
Nine:
Bruce:
Both are Petsmart finds.
Here are some pictures I managed of my past PK/HMPK boys that I found at an LPS where I used to live.
Draco:

Iceman:
Gambit:
Iceman and Gambit were my first PKs, two of three of the very first ones we started to carry in my LPS where I worked at the time. I LOVED those two to death. <3 Such amazing little spunky personalities, I really miss them.