I chose a gas-powered saw over an electric because of the easier handling, with the gas motor acting as a counterweight to the cutting head.
For the first few minutes of operation, it was a bit hard starting and prone to stalling. After some break-in running it's far more consistent, but will still occasionally stall from idle. Restarts very easily and so far has not been a problem. Plenty of cutting power.
My complaint is with the design and build quality of the extension pole. Somewhere around the 4th time I used it the drive cable mechanism fell out of the pole as I disassembled the unit for transport. It is retained by a flimsy stamped-steel washer, which is supposed to be prevented from sliding out of the tube by four crimps around the perimeter of the tube. The washer managed to find its way past the crimps, and the whole assembly slid out. Another problem caused by this is that if (when) the washer slides forward in the tube past the crimps while the unit is assembled, it prevents the spring-loaded button which locks the tubes together from being pushed in. I needed a fat pair of pliers to squeeze the button. Got the tubes apart, at the expense of bending the washer (which is now even less likely to stay behind the crimps where it belongs). I'll probably engineer a permanent fix by putting a second set of crimps in the tube, to keep the washer from moving in either direction. But I prefer tools which work without requiring me to modifiy them to fix a design problem.