I suffer from the same issue. It's awfully difficult to get a good line with a more generous posterior. MTM has helped, but I'm still caught as being either too "old man" or too tapered. Quite frankly I've just come to terms with the fact that the "rules" were created for English people with no butts and that it'll never be "perfect" but who cares.
I agree. What have your experiences been like? Have you achieved a clean line all the way from the waistband to the leg opening?
I have preferred "tapered" before, but as of late I actually prefer "old man" as long as I have a clean line with a nice silhouette.
LOL @ the English comment