I've had a Stihl combi unit for bout five years, love it and never had any problems with it. Can't say it's the best but its been great. Last trimmer was a Echo, it was great to.
I bought this one a few seasons ago. It is the best trimmer I have ever used. Professional power and light. 7 year factory warranty... Mine has not had 1 problem. Starts on 2nd pull every time
I've had mine 8 years and have used it on my yard, my mothers yard and the farm cutting shooting lanes and deer trails though all the thick stuff and it still runs as good as the day I bou7ght it. I have used it heavy and push it hard.
Stihl all day long....I used to cut commercial and its a great machine. Having said that..I also have an Echo and while it doesn't seem to have the power of the Stihl..its a good machine.