First to start, if you dont find your higher end cables, I suggest that you dont waste money and agree with many comments here about Canare Star Quad, and Benchmark media builds them very nicely for a great price.
The all round second best cable i have tried is actually middle priced and it's the Cerious Tech Graphene Extreme XLR. It has it nearly all, resolution is just astounding, just lacks some dynamics and a little bass. You can get them new in your budget.
The best high end cable I have tried and tried and tried against dozens including cables costing HUGE amounts of money and that surpass them all and that I now use in all my systems, is to me without a doubt, the TelluriumQ Silver Diamond. I'm not sure you can find these second hand, but really worth a search.
The all round second best cable i have tried is actually middle priced and it's the Cerious Tech Graphene Extreme XLR. It has it nearly all, resolution is just astounding, just lacks some dynamics and a little bass. You can get them new in your budget.
The best high end cable I have tried and tried and tried against dozens including cables costing HUGE amounts of money and that surpass them all and that I now use in all my systems, is to me without a doubt, the TelluriumQ Silver Diamond. I'm not sure you can find these second hand, but really worth a search.