i tossed up for 12 months getting a wolf and a d40. What really guided me to the d40 was the aftermarket products that are available and the price but ill get one in about 3 years time once there is more products available.
VW Wolf benefits are rear locker from factory, fuel efficiency, cabin space, bad side- twin turbo if one goes they both go... joys of a turbo compound units. Lack of aftermarket products.
D40 price, aftermarket products, history and availability on parts, bad side- resale, clutch history and less electronics/ ECU's to fail so when on a outback trip any mechanic can work on it.