Where to put one's best power cords??

, Where should one put their finest power cords? Mono amps, preamp, DAC or transport?  Where will the best cords have the most impact?  Thanks, Jeff
I would put it on Audiogon, sell it and use the proceeds to purchase some music. That’s just me though.
I don't have a best as they are all from the same stable and now I know the best is all round and musically the best I could afford.
On my Node 2, I use a Nordost Purple Flare with good results. Best results came when I grounded the Node 2, especially when I added the Synergistic Active Ground Block to my system.