Who are some really successful tenor voices out there?

Ummm I would say the tenors in the Gaither Vocal Band. If you watch listen to their song "Alpha and Omega" on youtube their tenor (the guy with the curly hair) is really good. Also their new tenor in "journey to the sky" (guy with the short hair and short body) Also David Archuleta, Clay Aiken, and the lead singer from the Rascal Flatts are great tenors