They're adorable as babies and I always take tons of pictures as babies because it goes by so fast and they are so adorable, but in terms of personality, I prefer it when they are old enough to have mellowed out and their personalities have developed and they are not as skittish or fearful. We've had Hadley about two months now and she was about 3 months old when we got her, and already she is twice the size but MUCH more manageable... and I prefer manageable! LOL!