Personally, I'd pick Star. She's house trained, a plus. She isn't scared of kids. The other one is a "wallflower" which means in simple language "scared of everything." I'd shy away from that if I had a boisterous household.
The only way to really tell is to go look in person! Good luck! Once you see them, you will know. But I'd definitely compare them both and not just pick the first one you go see.
Brodysmom