I have the 1M long version and notice no problems. I even have the USB cables bundled together and coiled on themselves a few times, trying to antagonize something. Seems to be fine, I imagine USB 3.0 is pretty well shielded. Plus isn't pci-e 1x ~400mb/s, or about the same as usb 3.0?

That e-bay seller is turning out to be a slimeball though. He seems to keep increasing the price, but still hasn't shipped the cables I ordered days ago at a lower price. A real bummer, only place to get them