This is a tough one, ladies! Austin Mahone and Kendall Schmidt both sang Nico & Vinz's 'Am I Wrong' recently -- but which pop star hottie sings it best?

Mahomies, we seriously can't get over Austin's rendition of the emotional track! We love how much soul he pours into each note, belting out every lyric with feeling and intensity. And since he was accompanied by just a piano and his acoustic guitar, the intimate, stripped-down performance lets us soak up his vocals and allows us to really hear every note. Sigh!

Rushers and Drivers, we were totally swooning when Kendall Schmidt sang us a little bit of 'Am I Wrong' during his recent visit to PopCrush. The Heffron Drive frontman hit those falsetto notes with a couple of lyrics from the chorus, revealing that the track was a big inspiration for him. So sweet!

Who sings 'Am I Wrong' best? Cast your vote for Austin Mahone or Kendall Schmidt in the poll below!

Watch Austin Mahone Sing 'Am I Wrong'

Watch Kendall Schmidt Sing 'Am I Wrong'

Remember When Kendall + Big Time Rush Played Big Time Improv?