Well I have not had much time with the Afwayu neck, but it is fatter than the HD, that is for sure and measures slightly above 9K. I will spend more time playing my guitars over Xmas break. I only have the HDs so that is the only BKP neck PU that I have heard so far. I did hear the Rebel Yell Neck in my friends guitar through my rig, but that was back in October and did not have much time with it. I think the HD bridge and the Afwayu bridge are almost close as far as tightness in my guitar/amp set-up, but the Afwayu appears a little tighter especially when turning the bass down on the amp to an acceptable level even with the bass at 12 o clock (mids around 11 o'clock, treble around 3 o'clock and the presence around 2 o'clock, it is still tight, but slightly dark!! I have to turn the bass down a little more than I did with the HD bridge. The Afwayu just has that massive bass/low mid push but retains it clarity!!!! It is hotter and more aggressive than the HD. I need more time with this pickup, but I do like it over the HD for my style of playing. It does clean up real nice when rolling the volume knob back, but so does the HD.