Greetings! I recently purchased a Retina Macbook Pro. Being the base model, storage space is quite limited. I have a NAS to solve that issue, though I'm looking for some additional portable storage; I'm debating whether to get a 64GB or 128GB USB flash drive, or a slightly larger external hard drive. Space isn't an issue as long as it is over 64GB however write/read speeds is. If going for an external hard drive, being future proof is key I guess. Easily exchangeable connectors à la Seagate GoFlex, SATA III, 7200RPM and USB 3.0 at least would be appreciated. As for a flash drive, I guess USB 3.0 would be the biggest thing to look out for. - To add to that, I can salvage an SSD out of my gaming rig, alas a good enclosure would be sufficient as well. Last but not least, I cannot use anything that requires 2 USB ports to provide power. (Only 1 USB port on each side of the Macbook.) Can anyone suggest me what to get whilst keeping costs low and quality (speed) high? Thanks already!