As stated before, kittens need training to be well behaved cats. Your family will need to commit some time and effort into training no matter what the breed.
Munchkins are cute, I had looked at adopting one before but they have health problems because of their breeding. Not to mention the cost of buying one.
I ended up adopting 2 strays that are fabulous and they are what locals consider to be the undesirable "Hong Kong" breed of cat (aka mixed).