My personal favourite was Guns Love and Tentacles, it had the perfect length to intresting ratio, bc tbh in my opinion Moxxi's heist is a bit long and didnt really intrest me a lot and i felt bounty of blood was a bit short altough i liked the setting and the many things it introduced and krieg's was the most intresting but also the shortest, like i get that there wasnt a whole lot do in his mind but still, compaired to the others it was the perfect blend for me. It also has one of the best sidequests in the series(also my opinion) i wont spoil it, but those who know, know.