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jfanaselle wrote:but remember that compressed MP3s will never sound as good as a CD so don't expect it to be as good.
Well, true - but if you encode your MP3s at a high bitrate (256kbps+) with a proven codec ("lame", for instance) the difference is imperceptible. Anything below 192 kbps certainly suffers, however.
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I'd also recommend the SL for its many virtues. If you can swing it, I think you'd enjoy the amenities included over the S trim. I know this wasn't the point of your original question, but as others have mentioned, it is worth considering for reasons beyond iPod connectivity.