Stihl FS 85R brushcutter
But once you get into the professional series the FS 85R is the baby of the family. It's big brothers the FS 90R, 110R, 120 and 130R much meaner machines but they all carry their weight as well. The FS 120 carries an extra 2 kilograms more than the baby in the home series and almost double the kilowatts.
The FS 85R is still a solidly powerful unit touting .95kW of engine power and 5kg weight. The 85R is fitted with the loop handle while the FS 85 is supplied with the bull handles, so it depends on which operating feature you prefer.
Metal cutting blades are all standard on the pro series so spending time setting up trimming line is not necessary. The down side is obviously that you are unable to get into the tight areas or along fences with the one unit. If you are wanting one unit to do large areas plus trim garden fences and hard-to-get-at-areas then the best option would be the FS 55R.
The FS 85R will set you back about US$420 (A$540).