One acquaintance at school (I wouldn't say friend) said, "What the screw is that!" after he had seen my Pan Am. After a few minutes of listening, he said "That's what it must sound like at the studio!" This was after using my K702s. (I brought the Pan Am to lend it to another head-fier, who is currently trying it out with his HD600s) A few of my friends tried it and loved it. And then, just as I was packing up, one kid picked then up as I was talking to someone else and gave them a listen. He said, "They have no sound canceling and are terrible." I proceeded to tell him that no, isolation is not what determines sound quality and that these are open backed headphones, which are supposed to be like that. Of course, he told me that all headphones are designed for "sound canceling" and that all the best headphones, like Beats and Bose have "sound canceling," so therefore my headphones are bad. I sort of gave up after that...
Anyhow, I bet my friend is enjoying his HD600s with the Pan Am. Once I sell my K702 and Arcam rPAC, I'll get my hands on a HD650 or LCD-2/3.
P.S. One of my friends wants to get a portable phone he can plug straight into his iDevice with a $200 budget. I'm thinking HD-25s? dakmart has them for $150. I may get a pair myself, for school use.