I think I agree w/ Epona on this one... My thought when you responded was burmese. European burmese are less "cobby" looking and somewhat higher energy level. Cornish rex are also supposed to be pretty good at fitting in with other cats, but they are pretty high energy, so might not be a good fit for your current cat.
It may be eaiser for your male to accept a female, but some females can be quite bossy as well...so would depend on the individual cat's personality.
Because of the age of your current cat you might want to consider adopting a retired breeder... They usually retire them at around 2 - 4 years, so you know what the temperment is like and the breeder would be able to tell you how the cat would do with another cat (although they can't predict how your cat will react).
I haven't done much research into havannah browns, but they are supposed to be "middle of the road" I think in terms of energy and temperment. If you really like their looks, you might want to either go to a show and see how vocal / active they are or contact a breeder and explain what you're looking for. They should be able to tell you if their breed will suit you or not.
Art
It may be eaiser for your male to accept a female, but some females can be quite bossy as well...so would depend on the individual cat's personality.
Because of the age of your current cat you might want to consider adopting a retired breeder... They usually retire them at around 2 - 4 years, so you know what the temperment is like and the breeder would be able to tell you how the cat would do with another cat (although they can't predict how your cat will react).
I haven't done much research into havannah browns, but they are supposed to be "middle of the road" I think in terms of energy and temperment. If you really like their looks, you might want to either go to a show and see how vocal / active they are or contact a breeder and explain what you're looking for. They should be able to tell you if their breed will suit you or not.
Art