I use all Stihl equipment other than my chainsaws.
Best saw I ever owned was a Husky 455 I think it is! I have run it for years without a problem and cuts awesome!!! In 15 years all I ever did was clean it, oil it and keep the chains sharp.
I think maybe one or two bars. But I am also not easy on my equipment either. I take care of it, but it gets used when needed.