You could keep the Polestar and simply upgrade the plugs. I checked another post from you and it looks like those power cords use the Oyaide 029. Going to the 046 or 004 should increase detail and improve the soundstaging. I think the 004 is the more dynamic of the plugs though it is also the more likely to become aggressive sounding in the wrong system. Still, either should be a rather obvious improvement and fairly cost effective. Another great plug option coinciding with your indicated preferences would be the IeGO 8095. I've tried several other IeGO plugs and the 8095 is in another league altogether.
Power cord choice?
Hoping to change (or upgrade) my current PC in use with my ARC CD3 Mk2. Currently I'm using a Locus Designs Polestar and setting a limit $600 max. I'd like to find a cord that can get more micro details from the ARC yet, I'd like to retain the smoothness but, try to open the sound stage and get a little more bottom in doing so. I listen to Alt rock (Sir Sly, The Killers, Gargage), rock, blues using Classe CAP 151 integrated and Apogee Slant 6s. I know this is subjective but, I'm also doing my best to work with my budget constraints and I'm not going to change if the improvement would just be slightly incremental. I'd like suggestions to consider, please.