Kizaru and Fujitora, man. They are both pretty chill dudes, Kizaru's logia totally rocks too, it's my second favorite so far, after Enel's Goro Goro no mi.
Borsalino's laid back don't give a f*ck attitude is awesome for someone so high up in the Marines, though it can kinda grate, since I am dying to see him go all out and show the people that he is the strongest Marine when serious, which I have always backed the idea of.
Fujitora is pretty awesome too, interesting power, and his ever so slight displays of sympathy toward the strawhats and disdain to injustice is refreshing and reminds me a little of Aokiji/Kuzan. And I love the idea of a blind fighter.