We have a Stihl FS90 down at the lake and its going on 20 years. 4 stroke that runs on 2 stroke mix. I go down once a month and have to weedeat a couple of acres at least, too rocky for mowing. The fuel lines gave out a couple years ago and not having time to fix, I bought the new version, an FS 91R I think. We had just bought a house and I needed a weedeater and thought a backup to the old one down at the lake would be a good idea. No complaints from either. Grandma needed a lighter one and we went through a Worx brand rechargeable in a year. Bought her a Stihl FSA57 last year. She loves it, but there is no way I can its possible to do the work I need to do down there. Our house in the city, it would prolly be perfect.