Hello, I am planning a first class award redemption to North Asia with US Airways Dividend Miles with a stopover in Europe on the return. Returning from Europe (Lisbon) to USA i have several options: a) LIS-FRA-IAD with the last segment in UA 1st class presumably available now for my dates (according to united.com) b) LIS-FRA-IAD with the last segment in LH Business on the new B747 (LH418) available now for my dates. Questions: a)if LH opens 1st class inventory at T-14 on this flight, will US allow me to change my otherwise 1st class ticket (even if I have to pay a fee)? My travel is longer than 14 days so it will already have started by the time Lufthansa opens up additional inventory (if it does at all). I know US Airways does not permit changes after flying the first segment, but does anyone have experience if they would allow a change in only the class of service (no routing or flight schedules)? b) Is UA 1st class that much better than LH's new business? This is a day flight, so sleep/bed is not that important for me. I mostly care for food/IFE and overall service on this flight, especially if there is hope of upgrading to first class. What would you chose?