It's been a possible prediction for a good while now, but it seems that there are little next to no discussion on the area, so here we go!
Kenpachi and Byakuya are complete opposites, for one Kenpachi is from the slums, and Byakuya is from the highest level of society, a Noble.
What is your favourite attack/technique from any character in Bleach? This can be Zanpakuto ability, a kidou technique, a cero or even just a hakuda move. But please explain the reason behind your choices.