Could someone offer me a bit of advice concerning m&m versus m+? I am relocating to Frankfurt and will be flying LH business class a few times every week primarily within Europe and to MidEast, Central Asia, N Africa. Occasional flights to IAD too. So, I want to be able to use the miles I earn to upgrade from economy to business on longhauls europe to usa (for personal travel my job doesn't pay for). Also I would like to be able to book reward travel from FRA to the states. Would LH or UA miles be more beneficial? I will literally be flying full fare business on LH 3 times or more a week. Thanks!