I'm coming to my final decision.

Basically from all reviews, and friend's reference, it's going like this.

Comfort: ATH > HFI
Quality: HFI > ATH

I really can't compromise with Comfort-dept. So I want to confirm something for those who have HFI5/6/780 --

1. Compare with MDR V-6, the earcups are bigger / smaller?
2. Is it replaceable? Say with Beyer DT250.
3. The comfort of the default HFI pads vs Beyer DT250 pads?
4. Can someone post your picture wearing the HFI headphones? You may cover your face / censored it if you want.
5. And your personal opinion about the SQ between HFI 780 vs ATH A700/900

Since the Beyer DT250 is the minimum requirement for my acceptable comfort, I really need your feedback before deciding to buy it.

Thank you guys.