At the moment I am loving American folk /country duo The Civil Wars. Besides having great voices, the band's lyrics are so honest and their music is filled with emotion.
Their full album, Barton Hollow, was released in 2011 to rave reviews and this year the band won the Grammy Award for Best Country Duo/Group Performance & Best Folk Album. If you haven't already, I highly recommend that you give them a listen.
For loads more info on the band, you can visit their official site HERE