A friend's 15Gb 3G iPod had just died, and I want to replace the HD for him. What form factor do I need? I know it's a 1.8", but checking my purchasing options, I can buy both 1.8" and 1.8" x 1/8" models - can I use either of those? Also, will any off-the-shelf drive of the correct form factor work, or do I need a specific model? The Wikipedia entry for the iPod indicates that the Toshiba 1.8" drives use a proprietary connector, which got me concerned that I could end up buying a drive with the right form factor, but the wrong sort of connector. I've Googled around a lot of iPod repair sites, but I haven't found the answers I'm looking for. Any assistance greatly appreciated!