Here is a quick list of ZERO personal income tax places with (National average income) Also ALL of these have English as their national language.
http://en.wikipedia.org/wiki/Bermuda ($76k)
http://en.wikipedia.org/wiki/The_Bahamas ($18k)
http://en.wikipedia.org/wiki/Saint_Kitts_and_Nevis ($14k)
http://en.wikipedia.org/wiki/Anguilla ($9k)
Not sure on $$$
http://en.wikipedia.org/wiki/British_Virgin_Islands
http://en.wikipedia.org/wiki/Cayman_Islands
I couldn't find british Virgin Islands or the Cayman average income numbers but obviously the more money everybody makes the higher the cost of living is. I would assume the Cayman's are an expensive place to live and BVI's being reasonable.
So take this list and do some research. Basically every place on this list with a decent sized city will have good internet access and therefore be PARADISE since you can have broadband and live in a place where average temps are 80-90F YEAR round! the western islands tend to get stronger hurricanes while the ones to the east the canes are weaker usually since they have less time to form. Someplace like the bahama's aren't too far from the US so you can get back in relatively quick if you want to go visit family.