Brooks and Dunn I suppose it’s very subjective. And depending on what was hot at a particular point in time. I would nominate Brooks and Dunn if only for their Brand New Man album. It’s one of those I never skip one song. I saw Ronnie Dunn at The Grand Old Opry not long before *%!#. He still can sing... Ok... there are other great Country Duo’s... what ya’ got?