My favorite jeans are from Victoria's Secret. They last a long time, have a variety of fits and styles, and price ranges from clearance for under $25 up to those obscene prices none of us are likely to pay. They also have inseams from 30" to 36", which is HIGHLY in their favor.
My mom, sisters, and I have been ordering from their catalog since I was in middle school (we lived 3 hours from a mall) and they are super-easy for returns and exchanges. (Now I'm looking at their website to confirm their sizes and can't wait to be out of maternity clothes again!!!) Their pant sizes are from 0 to 16 as well. Another nice thing about their pants is the fits run across the types of pants, so if you find a fit you love in their jeans, you can sometimes also find it in the corduroys or twill pants. They are my favorites for casual bottoms. =)