At least for the next three years I will be with UA. I anticipate 250K BIS each year on UA and about 100K BIS on *A partners each year as well.
I will still earn 11x RDM on mostly UA premium fares and still earn enough upgrade Points from PQPs. lifetime GS is nice perks when I still fly around 350K BIS each year.
After three years, who knows what will happen to DL, AA or even AS. Maybe UA is the worst program three years from now. Too many uncertainties....