In this case I'm truly asking for a friend, no tongue in cheek here.  He's looking for an RC brush cutter for steeper slopes and didn't want to spend $50K to get one.  I know nothing about them, nor do I need one, but just trying to help an urban dwelling friend who thought I would be an expert because I'm a farmer.  LOL

What price range gets you in the reliable category?  What are the must haves and the best brands?  Thanks for the help!