It really depends on the individual cat, not its sex. We currently have nine: Six girls, two boys. Previously, my other cats have been predominantly male, but it was out of happenstance, not choice. (All of our cats have been rescues found one place or other.) Our sweetest cat is one of our girls, Evangeline. She does not want attention all the time, but she wants to love all the other cats, has never hissed, and has never behaved in a way that is aggressive even in the smallest amount. Our friendliest cat is one of our males, Fennimore. He is aggressively friendly in that if we are petting another cat, he will come over and push them out of the way because he wants to be pet.
I have to disagree with Basscat about intelligence. Our cat Estella is the smartest cat I have ever encountered. She plays fetch, seems to recognize certain toys when you tell her to get it, opens cabinets and doors, shuts doors, comes when called (or runs and hides if I am the one calling her and have nail clippers or medicine in my hand), knows what time to expect my son to get off of work and will wait for him, and pretends to get stuck behind a chair if she wants my son's attention and is not getting it. About the chair, if someone else "saves" her, she goes right back and pretends to get stuck until my son gets her. I keep valerian in a bag inside a metal tea jar. I had to start putting the jar in the freezer because she had somehow gotten it out of the cabinet and dropped it on the floor to get the lid to pop off. I took it as a fluke at first, but it happened several times.
I have to disagree with Basscat about intelligence. Our cat Estella is the smartest cat I have ever encountered. She plays fetch, seems to recognize certain toys when you tell her to get it, opens cabinets and doors, shuts doors, comes when called (or runs and hides if I am the one calling her and have nail clippers or medicine in my hand), knows what time to expect my son to get off of work and will wait for him, and pretends to get stuck behind a chair if she wants my son's attention and is not getting it. About the chair, if someone else "saves" her, she goes right back and pretends to get stuck until my son gets her. I keep valerian in a bag inside a metal tea jar. I had to start putting the jar in the freezer because she had somehow gotten it out of the cabinet and dropped it on the floor to get the lid to pop off. I took it as a fluke at first, but it happened several times.