... hmm...  I'm spending hours on forum  and Youtube trying to understand how actually sound  this pickups, to see if  found what I need. I understand that all deliver a  wery good balanced tone quality,  but also the word "tight" is used a lot for low end  tone side, especially with higher output pickups.  If the tight =  agressive, abrazive, "in your face" , then not what I'm for looking, because my doom down tempo metal  playing style need something else. 
So wich higher output pickup can be associate  with "smooth, fat, warm"  low end, balanced mids and sweet top end, but also clear and articulated without beeing muddy under higher gain setup, for a low tuned chambered mahogany guitar?
 Anyway,thank you guys helping me to understand why BK pickups  are different pickups ,but  in a good way...