I'm getting an iPod for Christmas and recently broke my old headphones. I did some research and found the Grado SR 60's or the 80's as the best bet for me. My question, however, deals with how well either one would function with an iPod. I have scannned over this forum and many others, and have found conflicting opinions. Some say the 80's are too refined for portable mp3 players while others say they're just right. Some say that the iPod can't even drive the 80's while others say it can with ease. The 80's are supposed to produce better bass than the 60's, which is why I'm considering the 80's over the 60's. Which one would you guys recommend. Also, if the 80 is too refined for portables, would a portable amp make a difference? I've read that it would, but I have not done any research on amps and their importance to headphones, yet. If I needed one, what would you recommend?