I think country has about 5-8 artists that are the hope for the future if country music is going to survive and preserve some semblance of where it came from and not go completely pop with a fiddle somewhere in the song to make it categorized as "country". I hate to tell all you Carrie Underwood, Taylor Swift, Lady Antebellum, Rascal Flatts, Keith Urban, Kenny Chesney etc fans...you're not listening to country music.
Of artists that get any REAL mainstream play, I think the top 5 have to be Jamey Johnson, Justin Moore, Eric Church, Chris Young and Josh Thompson (aside from the older guys of course, but I don't really think George Straight is gonna change his style after 60 #1 hits lol). Guys like Dierks Bently, Billy Currington, Blake Shelton etc are really talented but you have a lot of stuff that come from them that's on the fence. They've all had a few really good, country sounding songs, and then their next single will sound like it belongs on pop radio. There are only 2 female singers that put any real effort into even trying to be country that I can name you. Miranda Lambert is by far the biggest one of the two, and her stuff generally toys with a pop sound, but she at least makes a consistent effort on each album to keep a distinct sound and pretty traditional instruments in her (what is it now, 7 piece?) band...the other is Ashton Sheppard. I'm in love with this girl's voice, and she's finally had a few hits over the last few years, and I'm glad, because she sounds like she just came from Butcher holler lol.
As far as what I posted earlier, Justin Moore is about my favorite younger country artist right now...saw him in concert this past August and was blown away. I've been to around 20 concerts in my life of all different genres (George Straight, Incubus, 311, HW Jr/Lynyrd Skynyrd, Avenged Sevenfold, Rock on the Range etc) and he has the most talent of anyone I've ever seen since George Straight in that he sounds just as good on stage as he does listening to his CD. You can Youtube any of his songs live, and they all sound just as good as this one, but here's a recent example. This is the song that will be his next big hit, guaranteed.
http://www.youtube.com/watch?v=viob65mtyZE&feature=related