I love the large Ergo (I must get it in turquoise ASAP), but I'm pretty tall which is why it fit me comfortably. It's the sort of bag that could easily overwhelm someone. Definitely try the Legacy bags. The shoulder bag might be your best bet and the Ali is nice too (although if you're petite it might be slightly too large). Since you have kids, the shoulder tote might be a good bet for you. It's super lightweight and extremely comfortable. I like the leather version. It's the perfect "chic mom" bag. Good luck finding the right fit!