Originally Posted by
chigal
I have a bunch of miles and now as EXP thanks to double miles will get another 80,000 per month. Is it worth the extra 30,000 mile to fly First one leg of my Chicago to Sydney trip (at 110,000 miles), or better just doing 80,000 miles for Biz?
What routing? AA or Qantas? Flying alone or with a companion? If you have a way of earning 80,000 (!!) miles per month then I can't really imagine why you wouldn't pay the extra for F.