Join Date: Jul 2005
Location: Atlántida, Canelones, Uruguay (MVD) and rarely GNV
Programs: AV LifeMiles, CM ConnectMiles, BA Exec Club. Former:ex-ASGold, ex-UA1K, ex-COPlat, ex-NWGold.
Posts: 2,672
If you care about the ST E+ benefit to use lounges within the US, then maybe a foreign program with a lower qualification is ok. If you care about your elite status getting you domestic upgrades, then joining Aeroflot (or any of the other foreign ST partners) isn't going to get you upgraded on NW, CO, or DL domestic.
NW (and CO until/unless they leave ST) elites get upgraded on both NW/CO.
DL elites get upgraded on DL.
SU elites don't get upgraded on anything in North America.