What is the best power cable under $200.00 retail?

Another vote for Signal Cable.

How about one that I haven't seen mentioned here on Audiogon? There is a DIY cord commonly called the "Audio Asylum PC" which is well-regarded on the AA forum, using Belden 19364 14-gauge wire and high-quality plugs. RAM Electronics sells the equivalent ready-assembled in the $40-$60 range, depending on length and the specific plugs chosen (I'm using their cord with Wattgate & Marinco termination). I make no claims to golden ears, but I'm very happy with the cord in my system.

Hi There:
Why don't you build one yourself? Go to the virtual Dynamics web site, and there you will find step by step instructions on how to do it. Small changes will occur to you as you assemble! It is much easier than you think. You will find a MASSIVE difference in your systems sonics. The first thing you will notice is a pronounced Bass increase. not just BOOM, but layered pleasing low low energy. They will tell you there, that terminations and wire don't matter that much! In the grand scheme of things they do! Oynaid tips and good OF copper along with silver will get you where you want to go. I would never have believed this myself if I had not tried it. You will be amazed! You can do this for less than $100. The only real expense are the plugs. There is Wattgate and many others that are more affordable than oynaid, however they are the best souning. A word on synergy here. You will find that as in audio connectors, it is best to maintain the same material and circuitry for all your gear. You will find an elevation with each Cord you replace. Go for it! By the way, stay away from ribbon wire, it is very difficult to terminate.
DR Cervantes

PS Audio Power Punch, made a huge improvment for me and I use these extensively now. A great unsung bargain.

I second Vintage Audio Lab. May not be the best at your price range but decent enough. The audiophile who recommended these to me replaced his much more expensive LessLoss PCs with these.