You may want to develop a short list to read about (reputable reviewers only) and perhaps demo (usually purchase w a 30-Day return option)
Hi-level Nordost, Cardas, Transparent and Audience cables seem to be quiet popular, and are within the stated budget.
You may also want to create a string targeting Magico speaker owners... There are enough out there to get a direction or, if you are lucky, a consensus.
Best,

