I have no real experience with $500 cords, but your question relates to up to $300 and I do have a bit of experience there. My suggestion is this: buy 4-5 ft. of the cryoed JPS in-wall cable from Gene at Takefiveaudio, along with a cryoed Marinco 5266 male and 320 IEC. Also buy the adapter for $5 to burn the cord in on your refrigerator for a week or two. Total cost will be about $125 U.S.
I have 3 of these in my system (one on integrated, two on line conditioners). In the past I've owned, among others, the LAT cord, the Blue Circle BC 62 and the Cardas Golden (not the reference, but a cord that sells for $370 retail nonetheless). This DIY JPS cord (no soldering, very simple to make) is substantially better than the cords I listed above and will save you a ton of money.
I have no affiliation with Takefive, other than being a satisfied customer.
I have 3 of these in my system (one on integrated, two on line conditioners). In the past I've owned, among others, the LAT cord, the Blue Circle BC 62 and the Cardas Golden (not the reference, but a cord that sells for $370 retail nonetheless). This DIY JPS cord (no soldering, very simple to make) is substantially better than the cords I listed above and will save you a ton of money.
I have no affiliation with Takefive, other than being a satisfied customer.