I totally wore out a cheap corded Weed-Eater string trimmers, went into my local yard care equipment dealer to buy a Stihl straight shaft trimmer and the owner asked if I'd like to SAVE $200? I went home with an Echo that had all the features that the Stihl had. I used it for years & years, gave it to SON and he used it another 5-6 years. I got a new one 3-4 years ago, reloading it with string couldn't be quicker or simpler.
I did have a RYAN string trimmer for a few years, really basic, therefore cheap at Blain's Farm&Fleet. Curved shaft, no centrifugal clutch, you pull the starter cord and the string spool spins, Let's you trim at an idle. I had one, my Buddy had one, a coworker at work had one he really beat the daylights out of it till it died and he gave it to me, cheap spare parts! Finally mine died and my Buddy ended up with all 3. Pretty sure they were made in China but parts were avail. From Des Moines. Tough to beat my new Echo.