Tim McGraw is of the mainstream Country I mentioned above. For artistic integrity and stunning sound quality recordings, give a listen to Buddy Miller. He has turned the "front parlour" of his Nashville home into a recording studio. He produces recordings there, when he's off the road with Emmylou Harris, whose band he leads. He also leads the band at the annual Americana Music Awards Show, hosted by Jim Lauderdale, with whom he made a duet album. He is a major player in the Americana scene, where gen-u-wine Country music is being made.
The majority of the "Country" music coming out of the mainstream music factories owes more to The Eagles than to true Country/Hillbilly music: Merle Haggard, Hank Williams, George Jones (including his Rockabilly recordings under the name Thumper Jones!), Lefty Frizzell (The Band covered his "Long Black Veil" on their debut album), Ernest Tubb, Bob Wills, Moon Mullican (Nick Lowe has recorded his "7 Nights To Rock", Springsteen performs it live), Faron Young, early Johnny Horton, The Stanley Brothers, The Carter Family (Country royalty), Johnny Cash (my mom's favorite male singer), Patsy Cline, Wanda Jackson (she dated Elvis for awhile), Jimmie Rodgers, Hank Snow, Bill Monroe, Lester Flatt (Marty Stuart joined his band at age 14!), The Louvin Brothers (I hear them when The Everly Brothers are singing), Webb Pierce (John Fogerty included his "I Ain't Never" on his debut solo album, put out under the name The Blue Ridge Rangers! A great album of Country-inspired music), hundreds more.