C.K.
They have packages and single sheets. They printed out the pictures within an hour and you can take it home right away. They are not big on backgrounds, they just focus on the child. Sometimes they use props for different occasions (birthday box, valentine's heart, christmas tree, etc). They usually pretty good with moving children. I think sometimes their best shot is the candid one while the children just be themselves and being silly :)
Without coupons and membership it can be pricey though. But last time I went there, I just spend $36 for 5 sheets (8x10 or 10x13). So not too bad.