The Trajet and Kia are simiular, but you have to get a GOOD Kia, thats fairly new. The Trajet is awesome!! Boot space about the same... not too much!! A twin pram and that was it for both...

We got our Commuter on the weekend, and LOVE it!!! Each kid has thier own seat, we have 3 spare seats and a HUGE boot, with both prams, school bags, and 2 overnight bags, we still got a fortnights groceries for 7 people in it!!

ETA... The Kia is higher, but lighter, and a bit swayier in the wind.... The Trajet is solid and stable.. Seating is the same, and the back seats aren't too good for 3 kids over the age of about 10.. too squishy... mitsubishi Delicas have bigger seats and 3 fit easy...