In addition to Connecticut, I've lived in Maryland and North Carolina. I've found both those places to be warmer than CT in more ways than one! Residents here tend to be more curt, less diverse, less friendly. Cost of living and income are higher. Not much for teenagers to do around here. You can go to the next town for a movie or something. The trees are gorgeous, though.
Avon is an affluent town with a great school system. Low crime and a pretty suburban setting, the downside is higher property taxes. It has easy access to major highways and many folks commute to work. The public library is wonderful and there are many walking trails. A great place to raise a family, but not the most affordable place to retire to. Avon lacks a distinct town center like adjacent towns Simsbury and Collinsville and is not as walkable given the lack of sidewalks.
Beautiful, upper-class, New England town. Pros: great schools, beautiful scenery, safe, and quiet. Cons: have to drive everywhere, little economic diversity, not as convenient as some other suburbs to Hartford.