sorta depends on if you want old school or not.
i'm a bluegrass, gospel, close harmony kind of country man...i listen to Ralph Stanely, The Louvin Brothers, Emmylou Harris, Allison Krause, and Johnny Cash and that sorta stuff.
newer...honestly, i'd watch the CMT charts, and get some Garth Brooks. Friends in Low Places may be one of the best ballads about being a failure ever written.