Need help to make a purchase decision

Hello, I am currently the owner of a Corsa C and in May my leasing contract expires. And now I wanted to buy a VW Kombi because I become a father. I have already decided that I want a TDI because I drive my 20000 KM in the year. Now the big questions arise for me which VW Kombi I get to choose from Bora, Golf or Passat-Vaiant. I drove the Passat b3 1.8 from my wife her stepfather and the performance of 125hp in the form are my own I would like to ask you to help me. You may want to help me from the cars Pro and Contras in question. I would like to thank you in advance, even if you would like to have such a ride.