Bear in mind the new Vivaro is just a new shape Citroen Dispatch/Peugeot Expert with a Vauxhall badge. The new Transits are known for injector trouble and poor fitting doors, also security issues. The Renault Trafic is the same as the previous Vivaro that you ate using, same as I have, and the Nissan NV300 and Fiat Talento. Can't comment on the Relay/Ducato or Movano as I have never had any experience of them. The other alternatives are VW Transporter which os really expensive, Merc Sprinter, rust bucket, SWB VW Crafter, very under powered revs quite high even in 6th gear. There's always the Hyundai iLoad too.