I status matched into Alaska, the majority of my flying is still NW/DL, I just outsourced the mileage program. I am still in the honeymoon period but have nothing but praise.

AA options are back on the table as there is a 500 minimum and elite bonus when crediting to AS and I am not splitting my EQMs. Upgrades are of minimal importance with my travel habits. Being #27 on the list as a FO and not being on the list at all are equal in my mind. Reciprical DL upgrades come this spring so that is just icing in the cake. Biggest negative I can see is being subject to baggage fees.

FO versus AS MVP, MVP wins hands down.
GM vs MVPG, depends on what you want out of a program.