Be aware that alot of these power cords, like the Virtual Dynamics, are very inflexible and need alot of room to fit. I tried a VD #2 and I needed at least a good 12-15 inches between the wall and back of my rack to work.
I would go the Cable Company route or buy inexpensive here first on A'gon. One thought for a dynamic PC is the Kimber PK10. I have one on my amp, does a great job (is flexible) and costs $140 new for 4 ft. or can pick one up used for about $100. If don't like, you can sell very easily on A'gon. They also offer a premium model with upgraded Wattgate's.