Hi,
We have a 5 week old and after much reading and research we opted for the Quinny zapp. We chose this model for two reasons, the fact that it will fit in the boot of our cabrio, and secondly because we liked the option of the Maxi Cosi removable car seat which fits into the stroller.
All I can say is 'so far so good', the stroller and seat fit in the car with ease, the stroller is easy to push/control and many people have commented on how funky it looks (it's not very common here in Australia). The only thing we have found is that we will need to buy some kind of attachable bag/basket for the stroller which we can easily pick up of ebay.
I also found this review on youtube which may help.
There's also a promo video at the following web address I found which shows the Maxi Cosi, I'll try to embed it but it doesn't appear to work in preview hence I'm providing the page address.
http://video.google.com.au/videoplay?docid=1808584404585188759&q=quinny+zapp& total=3&start=0&num=10&so=0&type=search&plindex=1& hl=en-AU