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Originally Posted by xepherys
b) The Microdrive and minidrives in iPods and iPod minis are quite shock resistant. I know MANY people who use both at the gym and do not have problems. The MicroDrive is extremely small, has only one platter and two heads, and is designed to take falls (without a shell) from 4-5'. The drive in the iPod, I *believe*, is liquid filled (oil-based)... so it's slower (4200rpm or less) which is fine for it's application, and much less sentsitive to impact.
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one key to getting the best possible no-skip performance from the iPod HD is to use 128kbs AAC files. the iPod caches music data in chunks and then spins the hard drive down, so it's not even spinning all that much if you use the lower possible compression size that still gives decent quality -- 128kbs AAC. you could do 128Kbps mp3 files, but AAC has better quality for less size. 128kbs ACC is supposed to equal 160kbs mp3.
doing so helps the battery life as well.
and of course the surest way to kill an iPod's performance is to aiff or apple lossless codecs.