My family has been big fans of the adopt an adult cat method for years.
Our last 2 family pets came from the local HS. Gracie (who passed about 3 years ago) and the current family cat Midori.
We've become a big fan of spayed multi-color females. Both ours were 4 years old a the time of adoption. Far from desireable kitten stage, but you can easilly have 10 years of good companionship.
When I worked reception at the Animal Hospital, I always used to recommend that to clients who aksed about obtaining new pets. I got kind of dismayed by the number of people who only wanted kittens.
The pluses of adult cat adoption are many, less training, and if you know cats you can get a better judge of the personality of the cat you are getting whether you want a lap lion, a sofa sphinx or an active vocal kitty. With kittens beyond the influence of good training (which is a lot of work) its kind of pot luck what kind of cat you wind up with.