Women's Comfortable Jeans

I am enjoying wearing shorts as it is Summer. Pretty soon Fall will be here in few months. I know I do not want to think about it. I only have few jeans to wear in my closet. Jeans are comfortable to wear. I am looking for jeans that has a boot cut style. I love the feel of stretch. I like also the flare as my legs are long. Do you know the best jeans to wear? Where do you, guys buy your jeans?