TAC, you cannot dodge the first volley regularly, and this limits the number of mobs you can safely fight. Also certain mobs have attacks that they can use with an empty endurance bar, so it is best to avoid those types.
The mobs brickstown are easy for elec blasters to kill solo for the most part. I can solo even lvl to +1 paragon protectors in groups with little trouble. I will not go anywhere near freak tanks. Rikti are only annoying because it is hard to find a group without one damn adv drone.
They key to using elec is to take on groups that have two lieutenants or 4 minions, and a boss. I go in with trip mine, then immediately short circuit. Against the right enemies, they are made useless in the first volley. I then use a voltaic sentinal slotted for end drain to keep them down while I plug away at them.
I would not claim it is more efficient than Fire/dev or AR/dev, but it is certainly safer to solo with when used properly. It is also excellent for group play as it feels like a defender lite with blaster damage. It is far more utilitarian than the rest of the blaster sets.