Birman cats are the most personality balanced cat breed in the feline group. From all the sides they have proved them one of the best human companions. But you will have to spend a lot of time to play with them regularly. They always wait for the owner to form a great bond.
The main identification mark of a Manx breed is its tail. Either they will be born with a very short tail or even with no tail. Manx are inborn athletes and will jump around your house. They are very smart looking and gentle in nature. So if you have lot of time to spend with your cat go for a Manx.