Emirates is changing the aircraft from Dubai to San Francisco effective December 14th 2014 to an Airbus A380.
This matters because Emirates' A380 is fantastic – including its much fabled on-board private shower.
First class awards to the other west coast Emirates destinations on Emirates to Los Angeles (LAX) are VERY hard to get using partner awards (e.g. 90,000 Alaska Mileage Plan miles for a one-way).
However, from February 2015, awards are available in first class to San Francisco almost every day for two people using ExpertFlyer and Alaska Airlines' website:
Emirates is known to have 'phantom availability' on the Alaska Airlines website but ExpertFlyer (paid tool) has done a better job checking Skywards availability directly.
I hope you can make use of this!