Sorry x posted a few then!
Thanks Sparkly
Luby, DH doesn't like the size of the S-Max, he has a van for work and likes to feel the difference between his van and his car, or something as stupid as that...!
The seat in the middle of the Zafira does look about the same size, but the seat cushions are a different shape, the Vectra's sort of push the two outer seats towards the middle, whereas the Zafira is flatter IYKWIM? And the buckles are a bit more forgiving being higher than than the seats, rather than the Vectra's being sunk into the seats.... am I making any sense? I think the Priory seat is wider than the Britax one we have as well.
I think we are just going to have take the plunge, get the Zafira, and hope they fit, if not, DS1 will just have to go on the back row.
What's the noise like in the Zafira's? Are we all going to be shouting to be heard?