i personally try to buy cash, as dont like a lot on the monthly, as took me a long time to get out of debt and dont want to get in to it again, whilst i am a small company, that might change in the future if the compnay gets bigger and i got to get bigger newer vans,
as long as ur business can afford to buy a new van, go for it as can claim it back and looks better, but then there is the school of thought than a flash van puts off custy as they think you will charge a fortune to pay for the van, put a crap van = crap work
i think a new van looks good on commercial work but a older van can look better on domestic, but all depends on ur custy market