If you can afford it-VW Transporter T32 174bhp sportline. I think majority of people on here would agree.
If you can't (I couldn't), Trafic/Vivaro/Primastar IMO. SWB holds a 1k flat tank with space at the back for a reel. 115bhp from the 2.0 150bhp from the 2.5
As I said, I'm on my second and love them, just my opinion though, I don't like Ford and couldn't afford VW.
A mate has a Master that he really likes, he's got 1300litres. Bit too big for domestics though really.