Eldee you made the right choice hands down. You will not look back at all.
There is no comparison between the US and EK. The biggest difference is the tremendous weight of stress and fatigue lifted off your shoulders, weight you didn't even know you were carrying around until you leave the sand.
Enjoy the Big D. That is probably the best US operator to fly for right now. The hardest part of your job will be getting use to all the contract terms and work rules but you won't be doing much working as in flying. Congrats! Hopefully many more Yanks will be joining you and leaving Emirates.