I'm curious... have you heard the BPT litz cord with Oyaide connectors on it compared to say the new perfectwave PS cords, like an AC-5, 10 or 12?

I have not found "revolutionary" improvements with high-end power cords.  Subtle differences - yes, and I perceive them to be improvements in my rig.  I think it depends more on the components internal power supplies and other factors, like how much garbage is on the power lines in your house, noise on the circuit, RFI and EMI, etc.  However, I have been a fan of PS cords for quite sometime, simply because of their robust construction and the prongs and contacts of the ends.  Nobody, and I mean "nobody" that I have ever found makes milled from solid billet prongs, welds the wire to the contacts inside the plug and then vacuum molds/seals/encases it.  I don't care if you're buying Oyaide, Furman, Marinco, Wattgate.. pick your favorite boutique brand... they all used stamped brass contacts, maybe gold, silver, rhodium, whatever plated, but stamped brass(99% of the time) to start with, and they have holes in the positive & negative contacts!  What is that all about?  I'm sure there is some reason that the plug contacts have holes in them - but I've never seen the purpose of the holes explained.  And then the wire is attached to them with a screw..... and of course they are not sealed.  The PS contacts are solid metal, not stamped, thicker than any others I've ever seen and therefore produce a very tight connection with your wall outlet.  
I've also had some of my PS cords for going on 9 years now.. and I've never seen the contacts show any visible sign of tarnishing, corrosion or oxidation.  This is a good enough reason for me to use them.

Pangea just came out with a new version of their AC-14 called the "XL" model that is using solid copper blades.  This is the first brand of power cord I've seen other than PS Audio to use solid contacts.  I would expect them to expand this construction to their other models shortly as well.  Might be worth checking out - price is definitely "reasonable" compared to other boutique power cords.

I started with a PP Premier, but upgraded to the Perfect Wave P5 shortly after they came out.  The positive effect of this device is undeniable.  The power cords contribute too.. but the regenerator was nothing short of astonishing.  Ditto on the expense of the PS power cables.  I mean, after all, it's just wire and insulation for crying out loud!!!  
I have bought most of mine used due to their normal greater than 50% depreciation.  I have attained the majority of my PS power cables at .25/.30 cents on the dollar.  I only go so far up the food chain in the Perfect Wave series.  I know I have two AC-5’s and I may have one short AC-10(not sure without checking), but I know I do not have an AC-12(despite you’re posts that this is “the one” to have!).  I have one older Statement model and quite a selection of the models in between.  I have never taken the time to see if I could detect differences between them.  I just put the newest models on the most critical components and spread the others around without much thought given to "where" or which component I use them with.  I do know if I take them out of my system and go back to manufacturer supplied pwr cords… things turn to mud sonically speaking.  
I also know that my system reveals details and subtleties that I very, very rarely hear revealed in any other system - bar none to include systems at dealers, RMAF and at zenfest..  I think it is a pretty safe assumption to conclude that the PS regenerator and pwr cords are a significant contributing factor.  I’m also a fan of Goertz(Alpha-Core) IC’s and speaker wire – copper and silver foils.  Been a convert since I first tried some over 10 years ago.  Haven’t heard anything since that has motivated me to change.  If you have never tried any of their wire, you should give it a listen sometime and see what you think.  It goes for pretty reasonable prices used.  And the copper versions are not expensive even purchased new direct from Alpha-Core.

sorry 4krow for kind of hijacking your thread... but maybe us raving about the PS cords and getting your ad "bumped" will get you a buyer faster!!!