I have to agree with Ewan on one thing, Transporter,Sprinter or Berlingo It is a strange combination, Big vans or a little van!
Not having a go or anything. I have a swb transit, 400 litre tank in it. I woiuld like/will be getting a bigger tank soon, probably a 650 litre. I would of gone for a berlingo or transit connect myself as I do not need a big van for work reasons, Its just I needed extra seats in the back to pick my kids up so had to opt for a bigger van. I have hardly, If any more room
in it than a small van with having extra seats in and boarding out. My first choice of bigger van was VW transporter, But I could not stretch to the extra money they fetch (and rightly so, they are IMO the best van on the road, And I have driven quite a few different makes of transit size vans). I have always liked transits and I am pleased with this one, I could not stand Merc sprinters/vito's,Horrible drive. ex Father in law has a berlingo, seems pretty good van and dirt cheap.