Replying to Best hard drive for my computer

I have the new macbook pro retina 15 inch laptop and I cant figure out which hard drive to get for video/photo editing. It has a usb 3.0 port and 2 thunderbolt ports. I was looking into maybe getting a g tech hard drive and using a firewire adapter but I heard firewire is really slow. So then I thought about using eSATA to thunderbolt but you have to buy an adapter that costs $175. Then I looked into hard drives that were solely for thunderbolt but they are really expensive. So im stuck between a rock and a hard place as to which direction I should go. If you guys could give me some insight, that would be much appreciated. Thanks NS!