I have a OWC Mercury Elite Pro 3.0 TB drive, rockin' a USB 3.0 and two Firewire 800 ports. I also have a 2015 13" MacBook Pro with Retina display, with a plain ol' USB 2.0 and two Thunderbolts. What would be the best cable for connecting them? Guessing it's either Firewire 800 to Thunderbolt, or possibly USB 3.0 to Thunderbolt...? This would mostly be for video editing. Thanks in advance, guys.