IMG950105 1 - YouTube
Video of mine running I absolutely love it. It's a 2006 with 250hp. I have only ever plugged it up chipping shrubs or a whole poop load of walnuts.
I have absolutely abused it and it never has missed a beat. I feed it way over its compacity and it"s still running like a champ. I put stuff in it as wide as the rollers open and I'm still on the original clutch.
When it gets old I'm going to a bandit 1990 it will take a little more and can put more hp in it.
If the machine your looking at is 115hp Perkins it will struggle with the logs I'm running in the video. Our 250xp's are 140hp.
On an 18" 200 or more hp will let you chip 18" hardwood.