I love my Croix De Fer, easily put over 1k miles on it this year so far. Its no lightweight, tipping the scales at 24lbs and the brakes take a bit of getting used to once they're bedded in (over-the-handlebar-tastic). But there's a little room for lightening and as far as touring goes its ready to roll..
Never had an alfine, have considered it though.
ride both if you can & don't listen to Ross, it not made of iron. Its 725 goodness..