At United, Million Mile Flyers only get 3 sheets of paper with their congrats kits. But each one of
these sheets of paper is a Worldwide Systemwide Upgrade Certificate on
any published fare!
But then again they only get Lifetime Premier Executive status with it's 100% bonus miles and all related priviledges (72 hour upgrades, Star Allicance Gold worldwide lounge access, etc.)
I'm sure Delta Million Milers get at least that lifetime status level, right?
Not to mention we get to fly the world's greatest airline, which offers award opportunities in true First Class on International flights, including
United's First Suite!
Don't be jealous. Stick with Delta. I'm sure things will improve there soon. Like they have in the past (L fares, elimination of Systemwides, etc,etc.)