I have 2 males and one female cat household. Started with a tortise female, added a Petsmart male longhair, then took in a siamese male. The first two got along alright, no trouble. Add a siamese and then it was 'katie bar the door' time. He terrorizes the female and gets along super with the other male. Little Bit (female) Chance (1st male) and Bandit (2nd male) tolerate one another. Chance has really blossomed since Bandit arrived. They are all loving one at a time. Bandit is jealous of the time I spend with Little Bit and will chase her when she gets down. All in all will say the mix is pretty good. Cats will be cats.