So i moved from Canada to Europe (The Netherlands) and am torn about staying with Aeroplan for my points program. I'm rarely flying Air Canada now as i use United back to the US (few times a year) and SQ/LH/*A etc for Asia and Rest of World. As i don't fly AC as much i'm not getting the benefits of being SE with them like preferred seating and upgrades and *G doesn't really get you much with other airlines these days. I'm considering moving to UA MP since that will allow me to book E+ seats for free and upgrade using points. Something i can't do as a top tier Aeroplan member. I'm looking for advice on if i should make the switch. Here's the facts. Gold for life with Aeroplan 150k a year minimum for work. Rarely fly AC after the move to Europe. 1/3 of my flights are now with United (Europe to US) (previously 80% with AC from YUL) Rest of my flights are Star Alliance from AMS to Asia/Europe etc. Can't use my AC upgrades since i don't fly AC as much Choose to fly United over AC because the flights are far cheaper from Europe to US. Get SE 2x miles with Air Canada but only when flying on AC flights (rare now) Would like to both upgrade and get free Economy plus seating on United. Only possible with Mileage plus not Aeroplan. Closing in on 2 million miles with Air Canada and would like to hit that # but doesn't really make a diff at the end of the day. Need to take into account redeeming miles on United vs Aeorplan (as an SE i rarely have a prob redeeming miles with Aeroplan but the fees are very high. Fuel surcharge etc) It sounds like i'm answering my own question but wanted to throw this out there anyway. I thought about Miles and More also but since i'm flying United more i think that's the way to go.