You have to be careful with a number of items, the motor is just as bad if you are in an area of mobs, same with other turrents.I stopped using guard dogs after it killed me. it's a liability!
I am using the laser 1 at the moment (unlocked it last night)




my play stile is full Rambo so i get swamped a lot, i can handle that if not for the friendly Mortars raining down on me....