I've been looking at both vans, I like the look of the vivaro the most, but after lots of research on forums, the transit seems the lesser of the 2 evils. There are horror stories for both, but it seems the vivaro engine is less realiable, injectors seizing in head and needing a 10 ton press to pull them out. A friend of mine had an 09 vivaro with engine problems, £1500 later it still didn't run right, vauxhall couldn't diagnose it. He's got an expert now, they actually seem like good vans.