I have 6 acres - no mowing - riding mower for that. I will be bush hogging, land scaping, clearing, grading drive, pushing up piles to burn. Seems like the 3430 & the 3830 are very similar in physical size but the 3830 may have a little more meat on it's bones. Maneuverability looks like they would be similar. Would like to cover my bases in case I want to do something heavier later, but don't want to overdo. Appreciate everyone's valuable experience.