I remember a local group spreading a "study" around to local news outlets / radio programs and so on about how people in Minnesota were moving out because of the high taxes. But the information they provided didn't really provide much to indicate any sort of "why".

Then if you followed the info to the actual study you found that the most frequent destination for the folks moving out of Minnesota was ... California.

The point being I'm not sure how many people really move for just "taxes" and a lot more plays into it, and taxes are too complex to say "this state or that state" as it really depends on who you are and your situation(s).