I grew up in southern DE, and the air quality is really great. I went to college in Newark, and driving down to see my parents in Milford you could really taste the difference in the air quality.
And it's not that there's no taxes, it's that there's no sales tax - but I figured that's what you meant.
I've been in Florida in August a couple times and February. I must have an iron deficiency because in 90 degree weather....I don't complain it's hot. Thats why winter time in Jersey or even Delaware is not suite for me.
Best part is that your close to Philly, Baltimore and DC but far enought away to miss the hussle of the city. Moving from Montana it a good change from driving for hours just to get someplace. You can still find yourself a nice private home with a country view at a resonable price.