What Power Cord can improve clarity and bass slam?


My price limit is around $1K new or used. The new pc would be plugged into a dedicated line(12-gauge Romex)using an Oyaide DX/WPC-Z wallplate. My amp is a Valve Audio Predator/Mullard CV-2493-Northstar Sapphire CDP and Focus Audio FS8 speakers. Cables are JPS Labs-Superconductor Q/Plus. I would be replacing an Opera Audio Ella Baby pc on the Predator. Want to improve clarity in complex passages, add bass slam/definition and create a more open/liquid presentation without giving up speed-resolution and neutrality which are my systems strengths. After many hours of research here is a list of power cords that could work.
Cable Research Labs-MK 2
DH Labs-Red Wave
JPS Labs-Kaptovator
Silver Circle Audio-Vesuvius
Stealth Audio-Cloude 99
VooDoo Cables-Black Diamond Dragon
Your comments regarding these power cords would be appreciated along with any other suggestions. Look forward to your responses!
dayglow
I have a big bias towards BMI. After trying many cords in the past, they have been the best for me in all applications. There is a Hammerhead MKIV for sale here and it is an excellent contender. After a lot of trial and error, I would have to say you really never know what is going to match, but when you find it, it's obvious.

Of the ones you listed, I have listened to the Stealth, Voodoo, and DH labs. The Stealth Cloude 99 full was great on the Cary tube preamps I have own. Very fast, articulate and extended with surprising authority. I would recommend that one for you to try on your tube gear.

Have fun checking it out!
Have now heard the PAD 25th Ann and compared directly with Dominus Rev C and Ann Contego/Canorus. Basically all of them are heavyweights in the bass region...the 25th Ann was just quieter and brought more definition, less grain to the lowest regions. Quite a nice achievement.
PAD 25th costs 10.000 dollar, different price, different world. I am thinking about buying one later this year as well. Silver works better than copper in the world of highend. At the end even a powercable is about all the differt parts togheter you Judge a powercable for. PAD powercables excel in all the different parts you Judge a powercable for. This makes them PAD one of the best in powercables. Or even the best!!
02-28-14: Bo1972
Silver works better than copper in the world of highend.

Define what you mean by "works".

I know that silver has better electrical conductive properties than copper, and I have heard pure silver "work" well in a few systems sonically. Overall though, I prefer copper over silver as far as sonics go. So I would say that copper "works" better than silver for me, though a mix of the two works well too.