Is there a difference in the quality of sound coming out of the different iPod models? I read somwhere that some older models have better sound quality than the more recent models. Can't find it, though. So, I would like to know if anyone here has any knowledge on the subject. Video quality is not an issue at the moment because the iPod does not really handle HD playback or output. So, I am going to leave that out of the discussion. I am looking for the music player with the highest quality, fidelity sound. Basically, HiRes/Lossless Encoding -> iPod -> HiFi connector -> HiFi receiver -> Crystal Clear Playback -> Me Thanks!