Ford Transit

I could highly recommend a Ford Transit.
Mine has proved itself as a valuable asset.
It is petrol so was cheap to buy.
It will soon be converted to LPG, which will make it cheap to run. I have even been offered money for it as a courier company want an LPG van instead of a diesel since the high milage they do would make it very economical.
It's simplicity makes it easy to maintain. On long journeys I've found the front 3 seats great for sleeping on. It's rear space has been super for moving house, equipment, office, providing oppertunism and clearing junk.
The upright position makes it easy to drive and the "builders' van" looks mean that I can park it anywhere in the city centre with an "Essential Maintenance" sign on the dash. :)