Marantz or NAD

I'd like to poll Audiogon members as to how they believe Marantz products and NAD products compare. Are they even in an overall sense or would one be a step above the other? They each have their budget lines as well as their top higher end components. Are they comparable in terms of manufacturing quality and internal components used, in performance, in musicality, etc? Where is each one ranked in the high end audio scale of manufacturers? WOuld love to hear your opinions. Many thanks.