All depends buddy!!! Both work S@%T hard as does the rest of the family. Mind if you dont want to be stuck in Doha you may want to consider the A300 as it still has a large number of layovers around the network. Also it will eventually be faded out as the last of the A330's arrive so there may be an oppurtunity of upgrading to that!
Of course....im just a servant at the aft so Ill let the real fly boys tell advise you best!
