[jadimov]

...basic problem I see with the NST is that it totally depends on retail sales ...

Florida, Nevada, South Dakota, Texas, Washington, Wyoming and Alaska have no income tax. They seem to be doing as well as income tax states.

...propose that it be 10%...

I like that number too. It works well with slogans about tithes for church.

[Principled]

10% is sure better than any rate higher than 10%! The problem is getting the needed spending cuts enacted.

Further, revenue neutrality is required.

The 23% tax inclusive is revenue neutral ... and would lead to spending/tax cuts by pols who want to be reelected. And you know how pols want to be reelected!