I use a Vito, no problems with it at all. I went from a LWB T30 to a short wheel base Vito (rear wheel drive version) 2.2 engine with 135ps. Turning circle obviously better, drives like a car, went for a 639 as don't like the new version. Parts are cheaper, more reliable engine, prices don't hold as well as transporter but can pick them up cheaper, better offers around. Gearbox isn't as smooth as transporter was but overall very impressed with it. Seats are very comfortable on long journeys unlike many vans nowadays that are so uncomfortable after a short journey.