As a UA 1K, at least half of my mileage is international (Europe, Asia, Australia, Canada), but virtually always on the lowest available economy fare, as it is 95% leisure travel. The exception might be a purchased RTW ticket in C class. What are the odds of getting comped to a specific elite tier in the AC program (where I'm currently a non-status member) or the LH program (not presently a member). And which program is likely to be more attractive for this travel profile, whether comped or not?