One place you might check for tax rates is
Taxes by State
I realize you are not retiring here of course, but you may find that taxes are higher here in KS. Though I would imagine the overall cost of living is less.
A cost of living calculator here
Moderator cut: linking to competitors sites is not allowed
says it is about 25% cheaper in Wichita than Phoenix, except it doesn't include taxes in the overall calculation.
Based on what I've read about Phoenix, the cost of housing here should be substantially cheaper.
Read through the Kansas forum, there are a few threads about Wichita specifically.