I've gone to PRG and CDG this year from DEN on UA/CO. All four flights (there/back) have been DEN-IAD-Europe. I have gotten upgraded domestically 3/4, always E+ on the international. Am I better off taking LH direct to FRA? Tickets are usually similar price, I can't stand paying for drinks in E+ on international legs, longer flight would help with sleep, and don't need the segments for status. But I give up potential domestic first and E+. I'm leaning towards LH in the future. wwmpd?