I used to wear Levi's for the longest time but then one day I got fed up with the fit and tried a pair of American Eagle's. Wow, what a difference. Great fit and the style is one that I like - esp the Carpenter's.
I think jean brands are like shoes. Certain companies fit certain body types better than others. For tennis shoes, I've always stayed with Asics. It's not that I don't like other brands, it's just that other brands don't fit my feet as well as Asics do.
I'm surprised Crumpet hasn't asked to everyone to turn this into a take a pic of your ass in your favorite pair of jeans and post it thread. She does need some ideas of which jeans to try, right?