which ipod has the best sound quality? i currently own an ipod nano 6th generation and it sounds pretty damn good i think (with apple lossless). i heard one reviewer saying the new 7th generation ipod classic (160 gb) doesn't have as good sound quality as the ipod classic 5th generation. though i can't seem to find any new 5th generation ipod classics for sale. i heard somewhere too that a 128 gb version of the ipod touch is coming out soon. i'm looking for over 100 gb's of storage and the best sound quality possible. what direction should i go in? thanks, john