Did exactly just that last September- sold my Doblo & got a 2010 dispatch. The Doblo served me impeccably, what a great van & I only lost £1750 in value after 4.5 years of flawless service. However...... the dispatch is in a different league in terms of space, usability, convenience etc. Brilliant size van for wfp. I have a 500ltr cube shaped tank in mine & there is still tonnes of space in the back. Twin sliding doors, three seat cab are a big plus. My only concern was the height for putting ladders on/off but with a Rhino delta three bar system & rear roller it's no problem. I haven't looked back since moving up, it's a very positive move. Mine's a 1.6 hdi & it's more than capable. You can hardly tell when there's a full tank on board!!