Electrical. Definitely. Here's why. It's one of the basic disciplines (mechanical, civil, electrical, chemical) and has a much longer history than the others. As such it has a very wide range of "sub-disciplines", each of which come with their own job opportunities. I'll let the electrical engineers on here elaborate more. I am mechanical. For example, a good mechanical engineer is prepared to enter lots of fields: building design, power and energy generation systems, prime movers (internal combustion, turbines, steam, etc.), hydraulics and pneumatics, automation, heating and cooling systems, military systems, product design, manufacturing, mining, and on an on...