Thinking outside the box a little, have you considered cordless battery powered? No cords to drag around and no dramas starting.
Having already got some Ryobi 18v gear I thought I'd try the one+ trimmer when I got sick of mine taking more effort to start than to use. Does my suburban block fine, including sometimes getting a workout on buffalo that had been left a little bit to long. Time again I might go for the 36v option, but really I'm not only trimming the edges and what I've got does the job fine. A 4ah battery is enough to do the edges and some hedging and a quick blast with the blower to clear the driveway. Not sure if the head would suit, it's supposedly got and auto feed thing that I seem to have to feed a bit, but not being petrol powered stopping and starting it is just a matter of pulling the trigger.