In reply to jethro kiernan:
I had a renault trafic LWB until recently (mine was a high roof version) I really rated it and it was a comfortable ride. I converted it to a camper van, but before that took out the bulk head and had rear and side windows fitted which made it much easier to park and made it feel less van like. It didn't cost too much to have the bonded windows done professionally, and you can find rear seats online and on the usual sites at a reasonable price.
2L diesel version, 6 speed box. I'm not saying it would be right for you, but doing the bulkhead and the windows, would be good for any van where you intend to have passengers, and makes it easier to manoeuvre if you aren't so used to doing the van thing!
I've seen roof cages for sale for these quite often so that might help matters.
I've driven a vito and a sprinter and they go really well!.
Renault trafic is same as Vauxhall vivaro, Nissan Primastar.
Plenty of wheelbase options on the Sprinters.
Post edited at 15:17