Newbie to the board and international travel and was wondering what the best flight would be from ORD to either PAR/BRU/FRA as all are very similar in price. Would be flying Business class. It appears all flights to all 3 destinations are on 763 equipment. Are any of the planes older/newer than others, any airports nicer? As we will be spending time in all 3 locations arrival city is of no concern.