I bought a Baby Jogger II (the latest model of the traditional Baby Jogger) when my daughter was 8 months. The BEST thing I ever bought. I love it. I recommend the 16 inch wheels as they are so smooth rolling. I even roller blade with mine. I have a friend that has one with the 12 inch wheels and she states it is harder to push.
I also like the fact that the child can be up to 100 lbs and still ride in it. Most other brands only go up to 40 or 45 lbs. My daughter is 2 1/2 and is 40 lbs so I would be pretty sad if we couldn't use it anymore.
As for the child, she loves to go "blading" and for a walk. She is very comfy and enjoys being in her stroller.
It has had many a mile and still looks brand new. I got the navy color as the purple was the prettiest but not as durable fabric.
The new models come with a new canopy and I am going to order it as it flips back behind the stroller and has more head room for the child then the older canopy. I also purchased the rain shield, it is great for a windy day and keeps the child cozy and out of the breeze.
I purchased mine from www.travelingtikes.com
and they were great. They have specials from time to time also so you might check them out.
Hope this helps!
p.s. Another friend has an Instep and hates it! It only goes to 40 lbs and doesn't roll like our baby joggers!