I'm planning on purchasing a MacBook Pro very soon. I plan on going with the 128GB SSD for the OS and any essential application that needs to run at full speed, such as Logic Studio. Otherwise, I plan on storing everything else on an external HDD. Files, such as my music, should not require a fast disk. So what do people think of OWC's Mercury Elite-AL Pro Dual Mini External HDD? With a 1TB + 1TB RAID-1 setup, if a drive fails, I will still have the other drive running. This is to make up for the difficulty of backing up external drives with Time Machine. It's also bus powered for ease of use. I will probably purchase a performance-based drive down the road, but will not require it in the mean time (perhaps I will purchase an external SSD or something along the lines of that). I'm just checking to see what people's opinions are on my thoughts.