I recommend the Stihl FS-250 bike handle, if you like loops better, its much easier and cheaper to switch to loop than to bike, find the parts on ebay. You could probably find a good used one for your budget. It won't leave you looking for more power but the vibes can be tiring if you choose to run without the guard. They may be soon replaced by newer stratified charge versions from the European market. FS120,200,250 (4134 family) are very robust engines with a great track record. last year I bought a new FS250 and ran chisel blades clearing saplings during the winter months and an Autocut head for the growing season. Ive used it on the majority of the jobs I do and find it very versatile. I like it but, If I had to buy it again, I would have stepped up to the FS350 with an anti vibe housing and a tougher gearbox that can run shredder blades. Otherwise, I also have a Shindaiwa T242, they had some choke plate and fuel filter problems when they first came out, but has since been resolved. Negate the poor reviews on these as the issues have been resolved, mine is smooth as silk, quiet, well balanced, and never given me a problem, way more comfy to use than my FS-85R. You and also convert this to a bike handle.
Having said that, I did convert my 250 to the FS350-480 antivibe system. Got the parts on ebay. I had to swap clutch drums and add a 1.125 sleeve to the drive tube. Heres some pics. Major improvement in comfort.
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