Dont think theres much else real different, but cant confirm....
When i got mine (2nd hand) the 170hp had just come out. Anew one wasnt an option for me at the time and would have cost as extra $45K
I'm happy with what this one does as with our work being a mix of small/medium/large removals and just as much pruning work it plenty capable and still under utilised. For Double the price i dont think the 170hp would have earned that back. In my case anyway. If your about flat out block clearing and dropping trees in paddocks and can always get the chipper right up to the tree and have a loader to feed it, then great.
Most of the time we are carting parts out from the back yard, down the side of the house, through a 30" gate, out the driveway, to the street, to the chipper. Could have stuffed it through the ol 6"
