I have had ety's for a long time and this is interesting. However, some others have mentioned the PFs have some horn speaker qualities. If that is the case then I can understand why people might think they sound odd. Those types of speakers create very strong reactions regardless of how accurate the horn speaker is. If the PFs are anything like that then I can see it.
You know, I get the reference to horns, heck I have made it myself, but there are horns and horns! It is not about right or wrong either its just that for balance it is good to understand why I hear what I hear and what another hears that way anyone else can get a clearer picture.
I must admit I never thought I would see the day for instance where I found the LCD's a headphone I would not want to listen to. For others it still remains wonderful and that is great as each to his or her own. I often scratch my head late at night whilst listening to the PF's and think how could I go so far away from my almost 18 month opinion of loving the LCD's!