Nice, but starting at £100 is way overpriced
I use a USB 2.0 / Firewire 400 drive sold as being "Mac-friendly" (though, wisely, it shipped as FAT32 for compatibility's sake) with my PC. 160GB for about 50 quid. So a big premium for the aircraft-grade aluminium, which sounds suspiciously similar to that found on my bargain basement tennis racquet.