Look for a bandit 65xp at the minimum, I personally wouldn't go smaller than that ever the other 6" chippers are smaller because they have a 6x6 opening compared to bandits 6x12. I have a 95xp with a 37hp and it's sufficient for my needs and honestly I'm torn when it comes upgrading on whether to get a 12 or just to go to a more pimped out 90/95xp with a bit bigger motor and winch.