Perhaps your neighbours trimming looks finer because they have had more practice, or because they have a hedge species that shapes nicer. Our Grisilinea hedge always looks nicer than our Photinia or Pittosporum hedges - and I cut all of them with the same tool.
I've slowly swapped garden power tools over to electric. Mower and water-blaster are our only petrol powered tools now.
No regrets so far - and I'm at the el-cheapo 18V end of the market (Black and Decker). I agree with others who have suggested brush-less motors.
I'll get an electric mower when our current one dies. It's been blowing blue for about two years, drinks oil but keeps on going.