Either try buying something used, or borrow some from the Cable Co.
I’ve been out of the loop for too long now to really recommend anything current.
I will say this however…. Which ever power cord feeds the power line conditioner its voice or influence will be conveyed into the rest of the gear attached to that conditioner.
Its user preffs and or system needs at that point and from that point onward.
What fascinated me about the Shunyata Taipan helix alpha was how pronounced it articulated tone and or timbers of notes. There was more wood in the woodwinds, more brass in the brass and it elevated the bandwidth top to bottom where some power cords don’t’ truly address the entire sonic spectrum. Never did it present an analytical or strident demonstration.
Bass always seems lagging with many ICs & PCs. If exstension is improved with some wires, the sound can get bleached out and become more about the leading edge than the decay.
I also used various VooDoo and Elrod power cords for various items or passive PLCs. Nirvana and Dynamic Research also got into the mix. Not sure but I don’t think Dynamic research is around any more. Very stiff, very hard cables to work with too. Good values though.
I found putting the better PCs on the front and back ends worked best. Sources and amps. Preamp? Not so much of a change there so having a cord that doesn’t negatively affect anything is what I’d do there.
One other thing about former Shunyata Pcs was as you moved up the food chain the entire presentation was elevated. Sound stage grew. Depth grew. Again, the bandwidth was well addressed and appeared more dynamic..
Shunyata said the NR cords do not affect dynamics at all. It was mentioned too if one had the money to buy just one Sigma, it could be better to buy two Alphas instead.