I've been considering that; built-in CF SSD, and maybe a large capacity external USB drive (5400rpm laptop HDD in a "icydock" screwless holder). The internal w

I've been considering that; built-in CF SSD, and maybe a large capacity external USB drive (5400rpm laptop HDD in a "icydock" screwless holder). The internal would be fast, hold my OS, be enough for everday tasks, and the external could be for my media storage. This would probably improve battery life as well. I seem to recall that Linux gets significantly worse battery life than OS X on Mac hardware, not quite sure why, probably keeping more things active on average due to lower hw/sw coupling.