The Cloud 2 comes with an usb 7.1 soundcard\remote, the pro is only stereo and 3.5mm jack. both have same 53mm drivers tho.
IMO the Cloud 2 is superior to Razer Kraken or even Kraken Pro (they have only 40mm drivers/ razer doesn't last imo)
I have the hyper x cloud 2 and im loving them, gun metal, red looks good too, no fancy RGB or funky colors, just solid design\quality IMO.