With Electric you can regulate the temperature more efficiantly.
I have the 20lb smoker from
http://www.sausagemaker.com/index.asp?PageAction=VIEWPROD&ProdID=232 I also have a charcoal kettle type which I use for fish or roasts . The electric I use for jerkey, sausage,pastrami,hotdogs and such. My next grill/smoker will be one with an offset smoke box as to produce more of a cold smoke.