We will be flying from Jacksonville Fl to Sydney in Feb to catch a cruise and return from Singapore to Jax - have 100 thou points in amex plat and 100 thou in Continental - was thinking I would buy tickets and then use points to upgrade - have not a clue which airlines to look at - don't think I can put my amex points in united - even willing to pay alot $$$ for tickets if I can use points to upgrade - thanks