My Brother in law has a merc 4x4 sprinter which he uses for his forestry engerneering company, he had a county transit as well before the merc but the merc is much better and comfier. Its always overloaded with tools and parts and travels on road really well and also does lots of heavy towing as well, It always seems to get around pretty well in the woods and they are always getting it stuck in stupid places were they shouldnt be going with a 4x4, The only issue i found was when it was empty it was like driving a nodding donkey along the road bit bouncy oh and finding decent tyres that will fit and are weight rated so they have more grip off road. He is thinking of selling it to get a newer one in the near future