Check www.emiratesgroupcareers.com and it will list when and where there are info sessions around the US. I do know they are planning DFW and PHX and possibly DEN for the next rounds.

What aircraft you go on depends on their needs when you show up and possibly your experience. Boeings keep coming hot and heavy but when the 380 shows up things may change. Both aircraft have their good and bad points as far as life style go.