Lucky Brand (sometimes, their 34"/long length is really long), BKE (found at The Buckle), Express (sometimes), Guess Jeans... all fit me pretty well.

Most of the cheaper are built for people with big waists and tiny legs and no butt. My waist is a 31, legs are 34 length, and my quads and butt have muscle, so if the cut isn't really good, the jeans just won't work.