Timberwolf 150 DHB or a Greenmech Arborist 150

[CJB]

Hi, I hope some other members can help me make a decision I am planning to purchase a new chipper and have been looking at a Timberwolf 150 DHB and a Greenmech Arborist 150, I have used a Timberwolf 150 DHB but have just tested for the day a Greenmech Arborist 150 which was very good and very quite so I was impressed, please can anyone give feedback on the GreenMech after using it for a number of months and on how you have found the disc blades function & durability compared to standard blades. Thanks