8 weeks is definitely the best ! The cat-mom teaches her kittens so many important things , like grooming , using litter-box , and so much more . Of course some kittens can be taken earlier , and sometimes you don't have a choice ...
My little Inka was found in a cornfield , and she was hardly 6 weeks old . She is allright now ; but she needed (and still does) lots of attention ! But .. I DO NOT MIND AT ALL