Ive had good and bad in both sexes but generally found my males to be more relaxed and easy going , where they are more curious and outgoing my females have been a little more weary and nervous. I wouldnt say that males are more calmer as a rule though as I used to have an extremely friendly female BHP that wanted to be with me 24/7, apart from jumping when you first touched her in her tank never showed any signs of nervousness or aggression and would feed next to me on the lounge and make her way onto my lap once finished. Some snakes are just born with a nervous disposition ( male or female ) but IMO in comes down more to the handler than the sex of the snake