The Reagan and the Bush legacy is the national debt, over half of which has been accumulated with a Bush in the White House, and most of whats left was accumulated under Reagan.
Reagan's funding of terrorists to overthrow elected governments, using tactics such as beheading innocent victims to spread terror is an aspect of his presidency that will come back to haunt his legacy.
He will be seen as a popular likable guy, who policies failed.
Bush will not fare as well, he will be remembered for the almost uninterrupted stream of management failures and his name will come to mean "ineffective, second rate", Oh wait, it already does.

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“ The subjects of every state ought to contribute towards the support of the government, as nearly as possible, in proportion to their respective abilities; that is, in proportion to the revenue which they respectively enjoy under the protection of the state.”

Adam Smith , The Wealth of Nations 1776

"We have always known that heedless self-interest was bad morals; we know now that it is bad economics"
FDR's second Inaugural Address