I'd prefer the local one, unless you can find a well-converted one... personally, though, if it's a choice between converted Spacewagon with unknown service history and keeping the Adventure, I'd keep the adventure, resale and residual value on a japanese import is crap.

Opinions may differ.

Spacewagon versus Adventure, the Spacewagon has less space, and the local ones only come with a gas engine, but they drive much better. It's like driving a Lancer with a bigger engine and more space.