I bought this trimmer yesterday because my old one crapped out after two years. There aren't many choices unless you spend twice as much money for a quality unit like a STIHL. I picked the model with the curved shaft because it was $20 cheaper than the identical model with the straight shaft, and I still have the straight shaft that came with the last one. CHEAP being the key word. I put that glorifed hunk of plastic on just to see if it was any better than the strtaight one. After less than 5 minutes of trimming, the head flew apart and the spring headed for parts unknown.The good thing is that I received a free electric starter when I bought this unit. The bad part, is that I need it. This is also the hardest trimmer to start that I have ever owned, and it is new out of the box. I plan on selling this piece of junk at a yard sale, and buy a real trimmer.