I just received my V3 today 
Its wonderful! Carnival red looks very smart. I dont have any experience of previous Nippers, but here are a few things i really like:
covered mesh
there dont seem to be any of those pins that you pop in and out to either secure the pram or fold it. There are just two really easy black clasps.
narrow-fits through the doors in my house
a BEEautiful ride! Really. We took it for a test drive in the forest and its just wonderful, super light, excellent steering, smooth ride overall. My 15month old was very relaxed in it and she doesn't usually enjoy buggy rides.
The price is fantastic for what you get. I was comparing the BJCM GT Double and the Nipper. I bought from practicalpushchairs.com- great price and a free basket, along with bumper bar & raincover. You dont get any of that with the baby jogger.
Im super happy, hope the honeymoon lasts!