I lived in Aurora (by 59, so east Aurora) for 2 years, downtown Naperville for 3 years and downtown Wheaton for 2 years...
I _SO_ miss the food.
We just went to a wedding in the area a week ago and I hit up Portillos within 2 hours of landing in the Chicago area.
I would compare Cary to Naperville, maybe, but Wheaton or Schaumberg might be closer. I guess I can see the Barrington comparison. Naperville is pretty packed... you drive north south and barely move. I don't think Cary is as densely populated and doesn't seem to have even close to the same level of traffic. It will really blow your mind.
I've only lived in the area about 3 months, but I haven't found anything like the neighborhoods in Chicago. I didn't live in them but I loved to visit a different one every weekend and just walk around and explore.
Good luck with your move!