I'm not saying one way or another if they sound better, but the Cardas, Furutech and WBT parts generally have higher copper content in the brass as well as higher quality gold plating compared to typical Chinese budget hardware.
As Rclark pointed out, the hardware choice is more in line with an exotic custom HQ CNC machined enclosure, and should the owners want to sell them in the future, will only help make a quick sale at the highest possible price.
Steve