If you can fit your ears into them then I am sure they are as good as the pair I am wearing right now with my AKGs. But I found on the 6XX they are just too small to keep the 6XX an around ear headphone.
RahulSangalFenestrated Sheepskin on the AKG, I got the Sheepskin/Velour hybrids on the 6XX, but they reduce the size of the ear cup, so it fit much worse. I wish they made one that made it bigger.