You may want to research the Ventrac 2320,it looks to be very off road worthy and is articulated.Although it looks to be discontinued and replaced with a model they call the Freedom 300(wimpy looking),you might call the factory to check on old stock or left over dealer inventory.They are pictured in the older Ventrac brochures.Ventrac or 1-866-VENTRAC 1-866-836-8722.Hope this gives you more info,just something I stumbled upon when I was buying a Ventrac. Eddie