CA state income tax is nearly 10% if I'm not mistaken.
I still love California though.
Been in Florida about 6 years and so far there are only 2 things I like better in Florida than California
1. No State Income Tax
2. Amazing beaches (never cared much about beaches until I had kids, now we love the beach)
Everything else, California is hands down better. Even with their financial problems or whatever political issues, California is just a beautiful state. Unless you live in Bakersfield or Stockton or something. Don't live in Bakersfield or Stockton.